Homemade In Minutes all natural soup mixes from Frontier Soups offers convenience along with nutrition. Each mix contains no added salt, preservatives or MSG and is ready to serve in about 30 minutes! The home cook simply adds fresh or pantry items to perfectly spiced pre-measured dry ingredients for gourmet results. South of the Border Tortilla Soup is our top seller. Add chicken, salsa and chips for this Mexican specialty. Gluten-free.