From the 1940s experiment blog at wordpress:
Eggless Mayonnaise
Eggs were in very short supply during the war and the ration was for 1 shell egg per week per person or 1 packet of dried eggs per person every 4 weeks. Consequently many recipes were eggless..such as mayonnaise.
Method
- Mash one small cooked and skinned potato until very smooth and silky.
- Add one teaspoon of made up mustard and a few teaspoons of vinegar to your own taste
- Slowly add in 125 ml of salad oil (vegetable oil) then season with salt and pepper to taste
******
The 1940s author does state this isn't much like mayo, but IS very good!
Check out her blog, she's using vintage foods/recipes/methods to try to lose 100lbs in a yr.
So far, she's well on her way!