Watermelon Gin Punch

So in love with all the summer drinks! This one is tasty and pretty!
What you need:
One-half small round seedless watermelon (about 3-1/2 lb.), peeled and cut into large chunks
1/2 cup fresh lemon juice, strained
1/2 cup simple syrup
8 sprigs fresh mint; more for garnish
2 cups gin
What you do:
Purée the watermelon in a blender or food processor and press the purée through a strainer. You’ll need about 4 cups of juice—it’s fine if there’s some pulp in the juice. Chill.
Put the lemon juice, simple syrup, and mint in a 3-quart serving pitcher or a punch bowl and mash the mint thoroughly with a muddler or the back of a wooden spoon. Add about 4 cups of ice, the gin, and the watermelon juice and stir.