Another fun alcohol experiment I've tried the results of was fermenting lime syrup. Cut up limes into sugar (and keep the peels and rinds on them) and wait until it turns to liquid. Add more sugar until the sugar stops dissolving. Take your resulting sugar-lime-concoction, do the normal SG etc stuff and brew it up. Start your yeast before adding it, it needs to already be pretty happy before it goes into the acid stew.
Make sure to stabilize when it's done, so it doesn't continue to ferment it to pure alcohol. You need some sweetness in there. Keep refrigerated, sealed and out of the light, or the flavors will degrade. But it's worth it.
Once you have this stuff, I recommend trying it straight first (It is truly delicious), then making a jank ass Cuba libre. My recipe is to build over ice in the glass with: a kitchen spoonful of second molasses, two or three ounces of the lime stuff, stir, and lengthen to full with Coca-Cola. It's insane to put the alcohol into the lime and separate the molasses out, but it tastes heavenly.
Make sure to stabilize when it's done, so it doesn't continue to ferment it to pure alcohol. You need some sweetness in there. Keep refrigerated, sealed and out of the light, or the flavors will degrade. But it's worth it.
Once you have this stuff, I recommend trying it straight first (It is truly delicious), then making a jank ass Cuba libre. My recipe is to build over ice in the glass with: a kitchen spoonful of second molasses, two or three ounces of the lime stuff, stir, and lengthen to full with Coca-Cola. It's insane to put the alcohol into the lime and separate the molasses out, but it tastes heavenly.