Paleo mayo. This is a necessity while on whole30, I have made several paleo mayos and after tweaking it each time, I finally came up with my favorite. Recipe adapted from @amazon_ashley she has a great roasted garlic mayo and ranch also!
Crack egg into a wide open mouth jar. Add 1/2 c of avocado oil or light tasting olive oil. Add 1 tsp rice vinegar, 1 tsp of lemon juice, pinch of salt, 1/2 tsp of dry mustard or Dijon. If you need more mayo just add 1/2 c more oil. Put immersion blender to bottom of cup and turn on leave on the bottom until it starts getting creamy then slowly bring up the the top to mix in the rest of the oil. Easy peasy.