It's almost working. But the texture is just a little off.
Any thoughts? The pot the boba boil in is sealed tightly to keep any alcohol vapors from escaping, and to keep oxygen out, so that the whole thing doesn't just catch on fire -- and it's a glass lid, so I can watch the alcohol condense on the top of the pot and drip back down in.

I think the texture problem comes from losing the alcohol during the boiling process; any “sealed” pot has leaks (and it should have, otherwise it will explode) and the alcohol is the first thing that escapes the system since its boiling point is the lowest. You could use a common (http://www.breathalyzercanada.com) to check the alcohol loses.