I've been experimenting with flavor extracts using gelatin (although i've switched to agar agar, which is much faster). It's actually great fun, and really packs a flavor punch in a batch of wine. So far i've only used them for back sweetening but this morning i found nearly 200mls of a mango essence had dripped out overnight from about 300grams of mango mash and half a cup of water.
The syrup is delicious, really amazingly delicious. I had a spoon full and had to grab hold of myself so that i didnt just drink it all. I measured the sg of the syrup and it came in at 1.064 which got me wondering whether anyone has used a largish quantity of gelatin extract as a primary fermenting base? If so, are there any pitfalls, things to look out for? Would this be something worth experimenting with?