Kitchen temperature is not a big problem when you whip the chocolate chantilly after having refrigerated the chocolate/water. It's just like whipping cream, not a long process, so it has not the time to go much higher than 4°C while whipping. I made it last summer while having 35°C in the kitchen, no problems at all. I don't know if this tool is sold in the USA: http://www.diunamaishop.it/catalogo/schede/13382_1257846998.jpg in my opinion it's the best for this preparation. The whip has the most thin wires of all the whips I've seen for sale, plus while whipping you can feel the changing thickness of the chocolate chantilly, so after 2-3 times you make it you just feel when it's done. If you use the kitchen-aid, I'd recommend to not make small quantities (at least 300g of chocolate). And I'd recommend to whip it at medium-low speed, and stop just while the whip starts to leave some light trails on the surface of the chocolate chantilly. Just think about the consistence of whipped cream before reaching soft peaks, while its volume has increased near the top, but the consistence of the cream is still almost liquid. This recipe has some valuable pros. For example it's good for people who have dairy intolerances, or people who follow the vegan philosophy. If you happen to have a good amount of these kinds of customers, then the chocolate chantilly is always a good solution, it satisfies almost everybody who can't / don't want to eat something. If any of your desserts are dairy-free, vegan, or whatsoever, then some chocolate chantilly plus some berries (or flambeed banana, or other fruits) is a good ace in the hole. The fact that it's not sweet like other mousses is a good help while balancing desserts with other sweet components. If you are making a dessert which include a dried meringue, the chocolate chantilly makes a better pair than any other kind of mousses. Or if you already have a sauce made with milk or cream on your dessert, then it's a good thing to use the chocolate chantilly, not to be redundant with dairy components. I think it's a good solution for a wide series of desserts. If you eat it alone, it's almost an acquired taste, because its taste is quite different from all the chocolate mousses people are used to eat (it's not "mass friendly"): the first time a person tastes it, usually he's a bit puzzled due to its "weirdness" (meaning quite different from his past experiences). But in the hands of a pastry chef, it gives a lot of new possibilities. I made a simple and basic dessert time ago (dried meringue with ground Sechuan pepper, chocolate chantilly and rosemary sauce), I could not balance it with any other chocolate mousse recipe. Plus you have a lot more possibilities (flavoured liquids, fruit juices, using cocoa butter and not dark chocolate, and so on), so I suggest to not dismiss this recipe after trying it for the first time, it can be really useful. Uhm, I think Herve This should owe me some money after writing this post. Teo