Who's got time for slow food when booze is concerned? While this is not instant in the Tang sense of the word, it does cut weeks / month off the traditional limoncello recipe. Lemon liquor American style! It is a crowd pleaser among old tyme limoncello drinkers including a commercial lemon grower who has enjoyed plenty of this elixir in his day.
In fact, simply by soaking dried lemon or orange peels in vodka or other alcohol, you can make an intensely flavorful sugar-free liquor. While I haven't tried it, I imagine it's likely that, for those on sugar free diets, you could add a touch of sweetener if desired, to the lemon liquor.
Makes a great Instant Low Sugar Lemonade Kit too!
Soapbox: Please only use LOCAL or domestic lemons if possible!
Total time: 16 hours including dehydration and infusion; a few more hours or days definitely does not hurt. This is the bare minimum.
You will need:
2) 4 meyer lemons per jar (or other lemons, as long as they are very juicy)
4) vodka or everclear
Equipment: A dehydrator or oven