Most commercial mayonnaise contains soybean or canola oil. These are industrial seed oils that cause inflammation. You don't want them in your body. Keto-friendly brands use only avocado oil or olive oil instead. (Don't be tricked by brands that say "made with olive oil" -- this is false advertising, and the first ingredient usually is a vegetable oil.) We stock Primal Kitchen in two flavors currently, Original or Chipotle Lime with a spicy kick.