Out of all the drinks on this site, this one is the punniest, so I apologize if that offends you. Of course if you're that easily offended, you won't be following my blog for long, so...
This cocktail makes use of the huge piles of herbs growing in my garden. Herbs are by far the easiest plant you can grow in a garden. So I grow huge piles of them and declare myself a master gardener (never you mind the wilted tomato plants and mold-covered squash leaves). Sort of like how I throw four ingredients together and declare myself a master liqueur maker--how you behave in one area of life is how you behave in all of them I guess.
Now, despite having the appearance of lemonade and the presence of healthy veggies in the garnish this is a strong drink. That's where the "party" comes in. So don't have too many or you'll end up prancing through your garden wearing nothing but your party hat. Just...trust me on that one...
In a cocktail shaker, place thyme stems and muddle (or crush with the back of a wooden spoon)
Add gin, limoncello and lemon juice juice to a shaker with ice
Strain into a glass over ice, garnish with lemon slice and top with soda water