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paulraphael

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Posts posted by paulraphael

  1. 9 hours ago, haresfur said:

     

    From my reading, there are a number of non-stainless carbon steel alloys that are extremely hard so it gets confusing. I actually lean towards tougher and easier to sharpen but that may well change if my sharpening skill comes along. I have a long way to go.

    Yeah, it gets confusing! Hardness and abrasion resistance aren't quite the same thing. All else being equal, a hard steel will be more abrasion resistant (and harder to sharpen) than a soft one. But when steels have a lot of alloying elements that create a high volume of hard carbides, they become very abrasion resistant. And this added resistance comes regardless of the general rockwell hardness of the steel.

     

    You can think of steel as being like concrete ... the base metal is like the cement, and the carbides are like the sand and gravel that the cement holds together. "Simple" carbon steels, like the Hitachi white and blue paper steels, are like smooth concrete with tiny pebbles in the mix. Even at high hardness, they're relatively easy to sharpen.

     

    High hardness and high carbide content are both antithetical to toughness. If you want a blade that can be sharpened to a very acute angle and support a fine edge without chipping, you need a steel that isn't too hard and that doesn't have too high a carbon content. But it can't be too soft, either, or it will collapse! Knife steel is a balancing act. 

     

    If you want to nerd out, this article on edge stability and this one on edge retention can take your mind off the world for a while. The latter has interesting charts on the toughness-to-hardness ratios of different steels.

    • Like 4
  2. 10 hours ago, Rickbern said:

    It’s also the durability of the freshly sharpened edge that leads to opinions about different steels.

    That's true ... but you have to be pretty good at sharpening to know if your edge retention issues are the result of the steel vs. your sharpening technique or geometry. It gets complicated.

     

    High-alloy tool steels and super alloys can have lousy edge retention if you sharpen them to too acute an angle. They have terrible edge stability and will microchip. AND they're challenging to sharpen, because these steels were specifically designed to resist abrasion.

     

    And some steels are tricky to deburr. They'll seem sharp straight off the stones, but dull very quickly. It's not intuitive that it's a technique problem, made worse by a quirk of the steel.

     

    Edited to add: lots of restaurant cooks like the simple carbon steels that you like. They just sharpen after every shift. 

  3. Yeah, I find that strawberries get kind of sour and astringent, and with a bitter aftertaste if they aren't at least pretty good. We only have a good ones in NYC a few weeks out of the year most years, and you have to go to farmer's markets. Then I'm usually more inclined to just eat them than to make sauce or sorbet ...

     

    Tell us more about cloudberries. I've never heard of those.

  4. 50 minutes ago, btbyrd said:

    Steel type is unlikely to play a role in this test, but ZDP is much more difficult to sharpen than aogami super is. 

    Absolutely. It's the sharpening process that leads to the strong opinions about steel.

     

    I finally sharpened the cheap carbon steel Vietnamese knife I mentioned upthread, and have to admit it's getting me to rethink some things. I've always gone with low-alloy stainless steels for my main knife, on the theory that onions and garlic and all the acid stuff would quickly dull carbon steel. But this hasn't been my experience with this thing. And it's SO easy to sharpen. The ginsan stainless on my Tadatsuna is pretty easy, but this a whole different level. 

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  5. I don't think sticking is going to be an issue with something as soft as a grape. This is mostly a test of the absolute keenness of the edge, which suggests that a straight razor would do impressively (if expertly sharpened). Stickiness becomes an issue with things like potatoes, that are more rigid (so there's some force pressing them against the blade) and that have a solid but wet surface.

     

    I don't believe a mirrored finish is less prone to sticking. If anything it's worse, because the potato can make an airtight, suction-cup-like seal against it. Like if you were to make a clean cut of a potato and press it against a pane of glass. 

     

    Some people find a textured surface, like damascus or kuroichi less stick prone. But people who really care about this look for knives with a geometry that discourages it. A fatter blade with a convex slope on the front side gently pushes the food away and breaks contact with it.

     

    Personally, I go for knives with very thin blades that are very prone to sticking. I deal with the problem with cutting technique. If you cut potatoes and the like with the tip, and draw the blade through in with the right timing, by the time the two halves are severed, the blade is gone and cant be stuck to. This is just a little slower than using the whole blade and speed-chopping. Maybe if you routinely prep  whole 50lb bags of spuds you'll shop for a knife with more stick-resistant geometry. 

    • Like 4
  6. 3 hours ago, JoNorvelleWalker said:

     

    Disturbingly impressive.

     

    Yup. But I think the videos speak much more to sharpening skill than to the esoteric difference between alloys. 

     

    If you can sharpen this well, you'll get performance close to this out of almost any knife. If you can't, you're not going to make grapes split in two by glancing in their general direction. Even with the finest grained carbon steel and laserlike geometry. 

    • Like 1
  7. This is an example of the shortcomings of ChatGPT. It's a bad answer. Fat caries fat-soluble flavors. It can mute water-soluble flavors. It can be great for carrying non-volatile flavors that you perceive with your taste buds (sweet, sour, bitter, umami, etc.). It can mute many aromatic flavor compounds that you perceive with your nose (but I doubt all of them). This is complex flavor science, but the AI has just picked up on the old lore. 

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  8. 10 hours ago, JoNorvelleWalker said:

     

    Apples and oranges, I believe.

     

     

    What I mean is, is there anything fundamental to the motor or the machining requirements that would explain such a huge price gap, or does it have to do more with economies of scale, different markets, etc., or does it have to do with technical requirements that may not be relevant to a kitchen? That kind of thing.

     

    Not long ago the cheapest immersion circulator you could get was an $1100 Poly Science lab model. You can now get models for $400 that are designed to hold up better in a steamy commercial kitchen environment, and ones for under $200 that do anything a home cook could want. So that original high price for the lab gizmo did not seem tied to something fundamental to the task. 

     

    I'm wondering if homogenizers are similar. If so, there's a chance this ~$300 model is a great find. If not, it might just be a slightly glorified stick blender.

    • Like 1
  9. 28 minutes ago, JoNorvelleWalker said:

     

    If I didn't already have a perfectly lovely homogenizer I'd try it.  Take one for the team.  Report back.

     

    Jo, based on your experience, is there anything real that justifies the usual price difference between stick blenders and similar sized homogenizers? The difference seems to be close to 10X.

    • Like 1
  10. 1 hour ago, AlaMoi said:

    there is a product:  Carbon Off

    a super strength "oven cleaner" in a spray can - I use it on burned on gunk from boil overs on copper pots.

    works like a charm - use outdoors!!!

     

     

    Interesting. Is it different from regular oven cleaner? That's usually based on lye, sometimes with bleach. 

     

    I've used oven cleaner on some nasty cast iron. Recently I used a wire brush wheel on the end of a drill. The latter is much faster, but I ended up looking like a coal miner.

    • Like 1
  11. On 12/31/2014 at 12:56 AM, Smithy said:

    I have a flat electric (call it glass, call it ceramic) stovetop at home. The user's manual says not to drag or shake heavy cookware across it, for fear of scratching the surface. As I recall the manual is especially alarming about shaking/scraping heavy and abrasive items like cast iron across the cooktop. I'm sure that a rough surface of sufficient hardness could score that cooktop and make it more subject to breakage. I pick up my pans before shaking them when I'm flipping or sauteeing things.

    We just bought a house with one of those. I drag my iron pans across the top with impunity. Could I be secretly hoping it breaks so I get to replace it?

    • Haha 3
  12. Has anyone heard of the Dynamic MiniPro? 

     

    https://www.bakedeco.com/detail.asp?id=60812

     

    It looks a lot like the smaller Bamix (like what I've got). But it has interchangeable shafts. This version has a rotor/stator homogenizer. The standard version has a regular immersion circulator shafts, with interchangeable blades that are suspiciously similar to Bamix blades (but not identical ... they attach with a set screw). 

     

    This looks like a good company that has lousy distribution in the US. Made in France. 

    • Like 1
  13. The Cannon looks intriguing. Interested in your impressions after using it a while.

     

    I'd enjoy fawning over the Weber, but I'm not tempted. I'm familiar with the brand from reading reviews of their hand-hewn solid unobtanium espresso grinders. But I just don't need my pepper mill to be most finely crafted thing in the whole house. 

    • Like 1
  14. You've probably thought of methyl cellulose. That's the first thing that comes to mind. Not sure how you'd incorporate it. Mono- and diglycerides might also be something to experiment with (fat-soluble). Or portland cement?

  15. On 9/11/2022 at 5:28 PM, btbyrd said:

    If I had infinity billion dollars, I'd get a Pepper Cannon or Weber Moulin grinder. And I must confess that while I see no purpose in having a salt grinder, I would probably get the matching Weber one if I had infinity billion dollars. 

     

    How annoying of you to make me aware of these things.

     

    Until this minute I was perfectly happy with the Unicorn mill. Luckily my pepper mill budget is about $infinity billion short.

    • Haha 4
  16. 1 hour ago, sverreef said:

    Do you have any recommendations regarding other good flavour pairings with thyme ice cream by the way? My stock of frozen cloudberries is too precious to use for this type of trial and error 😋

    Strawberries, raspberries, pears, dates, figs, honey (ones with sharper, herbaceous flavors maybe), blood orange. Maybe goat cheese.

  17. I checked my notes from ages ago and saw this method for thyme ice cream (~5g thyme / L ice cream):

    1. Add thyme to milk; heat to 180°F/82°C
    2. Take off heat and cover; hold 30 mins; strain
    3. Whisk in dry ingredients and yolks; cook
    4. Etc.

    I also worked some lemon zest into the sugar, which complemented the flavor

     

    The thyme flavor from this simple method was fantastic. 

    If I do it again, I'll experiment with infusing the thyme into the fully-made mix in a sous-vide bag while cooking. It will be a longer time but a lower peak temperature. I'm hoping this works out; if not, I'll go back to infusing on the stovetop as a separate step.

     

    Thyme is relatively easy because it's so robust and stands up to heat and long cooking. This all gets more challenging with leafier herbs.

     

     

  18. 1 hour ago, gfweb said:

    Being an a-hole boss can add to the ambiance of a restaurant, though.

     

    I fondly recall sitting at Le Bec Fin and hearing the muffled rants of Perrier in the kitchen.

     

    FWIW I've never heard a bad word of him and his alums seem devoted

    Here's one. A close family friend was dining there when Perrier came into the dining room to talk to guests. My friend asked him to explain something on the menu. Perrier said something to the effect of, "if you need that explained, then perhaps you are in the wrong place." And he walked away.

     

    In other words, the kind of caricature of snooty French chefs that I remember from bad sit coms when I was a kid.

     

    This was shortly before the restaurant closed. I don't think Perrier talked to guests like this when he was well. 

    • Like 1
  19. On 7/21/2021 at 6:48 PM, Margaret Pilgrim said:

    IMHO these menus and their prices reflect more on the target diners and the restauratuers than the cost or execution of the food.

    I don't think that's true. Fine dining is built on a precarious economic model. No one's figured out a good one. A restaurant like Per Se can have more people in the kitchen than in the dining room. Skilled people who are at the top of their industry. They're using the highest quality ingredients available (often investing in suppliers to just make those ingredients available) and putting together meals of over a dozen courses, each with multiple components with complex preparations.

     

    It's been common for restaurants in this category to grossly underpay staff, and still to lose money on the food. Profits often come from the wine list, where the markup can be several hundred percent and there's no labor. 

     

    All it would take to create an $800 price tag is to break the broken model. Pay the staff what their worth. Give them reasonable work schedules and benefits. Mark up the food enough to pay for its preparation and the overhead. 

     

    I don't know if that's what's going on at these restaurants. But that's all it would take. I wish there were other ways out. Not being a member of the oligarch class, I will not be enjoying one of these meals. Not being a fan of the oligarch class, I share the world's annoyance at the prices. But I see value in the preservation of this kind of cuisine as an art form. Not sure what the solution is here ... NEA grants?

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