On the theory that a baker's reach should exceed his grasp, I just bought La Patisserie de Pierre Herme, which, sure enough, is in many areas beyond my quite modest abilities. I'm determined to press on, though, and decided to start with his basic genoise recipe. PH's note says the cake "is easier to make and has a more interesting taste" than the classic Genoise. It's obviously scaled to five or six cakes: 600 g almond paste 500 g caster sugar 330 g egg yolks 1,500 g emulsifier Peco 50 1 kg bread flour 350 g lukewarm melted butter The recipe says to cream the almond paste and sugar, then add the yolks one by one, then the whole eggs. Replace the paddle in the mixer with the whisk, and then beat for 15 minutes. Fold in the flour and butter as normal, and bake at 180 C or 255 F. I made the cake with a quarter of the listed ingredients, and it came out fine, in a bland Genoise sort of way; it's not the sort of thing you'd want to eat by itself, but it would be splendid in a bigger construction. While it hardly rose, it wasn't at all heavy, and it had a nice gentle dome on top. I had a couple of questions, though. 1) I read elsewhere that I could just skip the Peco 50, so I did. I am curious about what it is supposed to do in the cake, and whether there is any sort of easily-available substitute. (Peco 50 seems to hail from France.) 2) The instructions say nothing about heating the eggs before beating them, so I didn't. Had I done so, would it have made a difference in how high the cake rose? 3) In a related vein, in Desserts by Pierre Herme, DG says to heat the eggs to between 130 and 140 F; that is considerably warmer than other recipes, which seem to average around 100 or 110 F. Any insights on who is right? Or do they all work equally well? 4) As I had been warned on this site, the book makes frequent use of ingredients not recognized by an American home baker -- syrups at various Baume degrees, invert sugar, sorbitol, HF, NH pectine, etc etc. Does anyone know of a link here on eGullet, or else an external site, that deals with many of these in one place? The alternative is lots of Googling, which I am happy to do but would rather be spared the need to if I could. Merci mes amis.