Even the most seasoned egg deviler makes mistakes. When paired with a stubborn refusal to measure anything, an unbridled enthusiasm for mayonnaise or a faulty mustard bottle can result in a deviled egg filling that’s just a little too heavy on the condiments. Instead of being creamy—yet fluffy—too much mayo or…
source https://skillet.lifehacker.com/fix-runny-deviled-eggs-with-instant-mashed-potatoes-1846583222