It's pretty difficult to mess this drink up. I did not use a Collins glass, oh well. I used a jigger for my measurements but if you don't have one, just know that a normal sized shot glass is 1 1/2 oz, and I poured in the club soda last until the glass was nearly full.
1 1/2 oz gin
1 oz lime juice
1/2 oz simple syrup
5 oz club soda
cherries for garnish, and a splash of cherry juice
Add the gin, lime juice, syrup and club soda to a glass with ice. Splash in a bit of cherry juice and drop a couple cherries in. Stir well with a spoon. Enjoy!