Please help me measure powdered gelatin!

[Miri1]

Problem: My recioe calls for .25 oz of powdered gelatin, or one envelope. I need to substitute either kosher fish gelatin from Israel which has 14 grams per envelipe, or something called unflavored Jel that's made from sugar, carageenan etc. My head can't figure this one out- how much us .25 oz, and which of these should I use for an unbaked cheesecake (3 pkg cream cheese)?

[bushwickgirl]

One envelope, .25 oz of gelatin, is the equivalent of 1 US tablespoon or 7 grams by weight, and will set two cups of liquid. Kosher gelatin is a 1:1 substitution for animal
by-product gelatins; you should use half your 14 gram envelope for your recipe, 7 grams, or one tablespoon.

If your Jel is the product that contains Sugar, Calcium Carrageenan, Adipic Acid, Potassium Citrate, Locust Bean Gum, then use acccording to the package instructions, which should the same amount as for animal product gelatins.

One oz of pure carageenan will set 1 cup of liquid; it has a 1:4 jelling ratio and has somewhat less jelling abilities than other types of gelatins.

[cowboyardee]

0.25 oz of gelatin would be equal to about 7 grams. I believe that fish gelatin is a one to one substitute for any other kind of gelatin and thus you could use half an envelope. But I'm not positive and you should check the package for additional information.

Additionally, I believe most powdered carageenan can be substituted for gelatin at a one to three ratio, meaning you'd need approx 2.3 grams of carageenan. I'm unfamiliar with Jel, and that may work differently, so again check the package.

[wattacetti]

I actually looked up other applications of fish gelatin (there's a wealth of what consitutes a kosher vs non-kosher fish *skin*) and it is indeed 1:1 substitution, though I've never used it and would probably cheat a little just to make sure the cake set.

I've used up to 1.5% carageenan to make gels, but Lersch has recipes for panna cotta and custards that use 0.9% to 1.0% carageenan.

Jel = Genutine from CPKelco and is indeed carageenan stabilized with sucrose; 4mular version available from Le Sanctuaire for $42 per 27 oz bag. Haven't used it since I already have carageenan.