The pharaoh cooler is a floral, gorgeous watermelon cocktail and drinking a cold one (or two, or three) is a lovely way to while away a hot afternoon on the porch. The recipe calls for grenadine, but steer clear of anything with artificial flavors and corn syrup This drink requires real pomegranate, so check the ingredients on your grenadine. The original pharaoh cooler recipe we found on liquor. Com called for orange flower water. We flubbed up once and used rose water instead, and it was delightful so weve added it as an alternate ingredient.