You’ll be surprised to find out mayonnaise is quick and easy to make at home. A handful of ingredients, probably already in the pantry, whip up the most delicious, silky mayonnaise. This no-fail recipe is going to become a fridge staple. Adjust the type of oil (leave out the sugar too) and the recipe can be adapted for dietary needs. Since this recipe has no preservatives, it does have a shorter shelf-life than store-bought mayonnaise. If using a fresh egg, in the fridge the mayo will typically last 7 to 8 days. If using a fresh pasteurized egg, it will last about 10 to 14 days.