1: Be the best at-home bartender you can be with our super easy yet delicious cocktail mixes. Only primo ingredients and nothing icky. Just add booze!
2: Be the best at-home bartender you can be with our incredibly easy yet delicious cocktail mixes, made only with premium ingredients. Just add booze! (chosen)
3: Cocktail mixes for your inner bartender. Premium ingredients. Just add booze.
I’m aiming for a sophisticated but friendly tone of voice, one that isn’t too casual and also doesn’t sound too posh and patronising. I feel the second version achieves this as there isn’t too much casual language or slang in it, but the ‘just add booze!’ gives off a fun and friendly, slightly more casual feel.