Chicago summers call for patio picnics and backyard barbecues, rooftop rendezvous and stoop soirees. Just in time, we’ve discovered the best warm-weather cocktail in town: Hum Punch, a new collaboration between mixologist Adam Seger and chef Cleetus Friedman of City Provisions Delicatessen.Available exclusively at CPD, the punch package includes a bottle of Hum spirit (Seger’s creation of fair trade hibiscus, ginger, cardamom, and kaffir lime) and a half-gallon Ball jar of Friedman’s local berry rhubarb lemonade (made with Rare Tea Cellar Fields of France rooibos tea). Pick it up to go — or challenge yourself to make it at home.Berry Rhubarb Tea-monadeServes eightIngredientsFor the tea2 c. hot water4 tsp. Rare Tea Cellar Fields of France rooibos tea1. Boil water.2. Steep tea leaves for a minimum of 5 minutes (up to 10 for maximum flavor and antioxidants).For the lemonade1 lb. rhubarb6 c. water2 c. sugar2 lb. berries (any seasonal berry will do)2-3 c. fresh-squeezed lemon juice1. In a deep pan, cook rhubarb, water, and sugar until translucent.2. Strain in a sieve.3. In a blender or food processor, puree rhubarb mixture with berries and juice. Strain again.Hum PunchServes eightIngredients1 c. Hum spirit1 c. lemonade2 c. teaIce1. Combine everything in a pitcher.2. Garnish with mint; pour over ice to serve. Keeps refrigerated for up to 5 days.City Provisions Delicatessen, 1818 West Wilson Avenue, at Ravenswood Avenue (773-293-2489 or cityprovisions.com). Meet Adam Seger for a complimentary demo and punch sampling at the deli on June 29, 6-8 p.m.Photo: Courtesy of Hum SpiritsHungry? We have more picnic recipes to stuff your basket, plus the on-the-go accessories you’ll need to enjoy your meal alfresco.