I just make homemade mayo (recipe below) and I use regular light colored olive oil (not extra virgin, that's too grassy). 

Stick blender mayo
----------------------------
1 whole egg +1 yolk
1 tsp Dijon mustard
1/4 tsp garlic powder
1/2 tsp salt
2 T vinegar or lemon juice
1 cup refined olive oil

In a jar whose interior bottom just fits a stick blender head, place egg, add rest. Fit blender head over eggs. Add oil slowly. 

Blend, pulling up gently

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https://m.primal.net/KtEH.jpg