Home Health-Fitness Soothe That Sinus Pain and boost your immune system with this Apple Cider Vinegar Brew… 1/4 cup boiling water, 1/4 cup unfiltered apple cider vinegar, 1 tablespoon honey, 1 teaspoon cayenne pepper and 1 wedge lemon. Mix together and drink. The aroma opens your sinuses and the blend boosts your immune system, speeding your recovery.