To get into the sipping spirit, we dipped into Portland’s well of skilled mixologists, and asked them to help us come up with five quintessential summer cocktails. While a few of these recipes can be made at the last minute for impromptu backyard bashes, a couple call for infusions that, although easy enough to make, will require you to plan at least a few days ahead. No matter whether your sun-sodden guests prefer their cocktails shaken or stirred, up or on the rocks, if you’re serving thirst-quenching beverages such as these, they’ll surely manage to have a swimmingly good time.