Level 15

Taxes

you have to get out of auto sales tax to start with

then in manual sales tax you can create a sales tax item for the standard rate, and a combined item for the sales tax + booze tax. And you decide what to use on the sale

 

That said, you still can not use both sales tax items in QBO on one sale, it is not as flexible as desktop in this area.  So, one sale for stuff, and one sale for booze