An easy-to-make, delicious mayonnaise which really works:

¼ cup maize cornflour
1 tsp citric acid
1 tsp sea salt
½ cup sugar
1 and ¼ cups water
2 eggs
175 ml failsafe oil

Cook together cornflour, citric acid, salt, sugar and water. When thickened, pour into blender and while whizzing add eggs and drizzle in oil. Keeps well in refrigerator for approximately two weeks. (Not safe in the US where a high percentage of raw eggs are infected with salmonella.) - Robin