View Photos Beat the heat with a grown-up slushie made from refreshing cucumbers, fresh lime, and honey. Heidi Swanson suggests serving her aromatic coolers in short vintage water glasses for a proper picnic.Cucumber CoolerMakes one large pitcherIngredients 1 cucumber (10 oz.), partially peeled (lemon cucumbers are best, but English cucumbers are fine, too)½ c. cold water3 c. ice cubes (about 1½ trays)⅓ c. mild honey Juice of ½ lime or more to taste¼ tsp. fine-grain sea salt1. Combine all the ingredients in a blender. Pulse until smooth, frosty, and free of ice chunks and honey globs.2. Taste and add more lime juice, if you like.3. Serve in a large glass pitcher or individual glasses.Adapted from Super Natural Every Day, available online at amazon.com, $16. Get more from Swanson online at heidiswanson.com.Photo: Heidi SwansonHungry? We have more picnic recipes to stuff your basket, plus the on-the-go accessories you’ll need to enjoy your meal alfresco.