My wonderful husband got me an isi gourmet whip for Christmas and I decided it was time to play. I had co2 cartridges and grapes so I made carbonated grapes as my second experiment (I made whipped cream the day after Christmas but I can’t post those pictures). The secret to carbonated is…owning an isi whipping syphon. That and cold. Cold allows Co2 to get into food on a molecular level. No cold, no fizz. You need to chill both the whip and the grapes completely. Then you need to put in 2 Co2 cartridges being sure to hold down the handle to expel gas after the 1st cartridge but not the second. This gets rid of the air at the top of the canister so that it is completely filled with Co2. The Co2 must now make it’s way into the fruit so you refrigerate the whole thing on it’s side. Grapes take 8-10 hours to carbonate and last about 10 minutes so serve immediately. Once we expelled the gas and pulled them from the canister they were sizzling and whistling with co2. They taste almost like fermented grapes. We paired them with some Pt. Reyes blue cheese, but we immediately thought…sangria!
On Top Chef I would have been sent packing my knives! Tom and Padma would have scoffed that everyone is so over foam and this really brought nothing to the party. On the plus side it took minutes to make and I had to prep the pancake mix for the morning and make a school lunch tonight. So foam it was. My husband is out of town on business so of course I made myself a dinner of peanut butter puff cereal and toast while cleaning the kitchen and preparing a new molecular experiment. Doesn’t everyone? I just got my shipment of Soy Lecithin and had some pineapple juice in the fridge so I got out that immersion blender and in a few minutes had pineapple foam. I toyed with just tossing it on top of the cereal but it wasn’t colorful enough so I put out a little rasberry sorbet from Trader Joes, tossed on some berries and carefully spooned out the pineapple froth. It looks nice on the plate, was insane easy to make and was fairly tasty. No wonder all those top chef contestants do it! Not a bad way to class up a simple fruit desert and look way more talented than you are. I think a more colorful foam would be better though and I think that I had the ratio of lecithin to juice off a bit. It’s suppose to be about .4% I think but I didn’t bother with the math. Of course a lazy molecular gastronomist is probably a bad molecular gastronomist but this time it still turned out OK. I will follow a recipe and properly measure things when I make the beet foam later this week. Now I need to lay out the clothes for the morning, feed the cats and get to bed. I’m hanging up my immersion blender for the night.