Most parents end up offering mayonnaise to kids in different versions, but the fact is that it is not really a healthy option. Mayonnaise does contain a lot of unhealthy fats and can have negative impact on the kid's health if your little one has it too often. Here's a quick way to make mayonnaise at home: Mix 2 egg yolks, 1 tsp grounded mustard, salt as per taste, 1 tsp lemon juice, 1 tsp white vinegar and 1 tsp sugar. Add a cup of olive oil and keep stirring to make a thick paste. You can read the negative impacts of mayonnaise in this article http://healthyeating.sfgate.com/disadvantages-mayonnaise-2068.html