Eating spicy food bathes the brain in endorphins, which explains the supreme rush felt after consuming a dozen hot wings or licking a mossy tree that's been sprinkled with crushed red pepper. Feel the blissful burn with today's Groupon: for $10, you get $20 worth of hot sauce, condiments, and mixers at Danny Cash Hot Shop in Englewood.

Danny Cash's capsaicin concoctions, which were featured on the Cooking Channel's FoodCrafters, showcase fresh ingredients and heat levels ranging from mild to superhot. The Bottled Up Anger sauce combines green serranos, red habaneros, lime juice, and garlic ($5), and the Mean Streak's mangos and chili peppers ($5) pelt grilled chicken and fish with flavor paintballs. Three-flavor multipacks ($15) contain a high-temperature trio of sauces, and the habanero garlic Convict Ketchup ($5) can be carried through airport security.