I never know what to pick up from the cocktail list: give me some tips on your favorite ones, include the ingredients and the recipe, if you know.

I'll start with Snake Bite:
0.2l grapefruit juice
0.1l tonic
Fernet, Becher (both are bitter herb destillates), gin.. according to your taste
a few drops of Angustura and possibly some ice

and
Virgin Mojito:
just like classic mojito, but without white rum ;-) (nothing extra added).
my favorite one in these hot days.