Can I use mayonnaise instead of avocado?

Yes—if you prefer a classic texture, swap in mayonnaise. Using avocado is the point of this recipe for a lighter, fresher filling, so adjust salt and lemon to taste if you substitute mayo.

Will the avocado filling brown?

A little browning can happen over time; the 1/2 teaspoon lemon juice in the filling helps slow it. Store the filling covered and fill the egg whites just before serving for the freshest appearance.

What if I don’t have a piping bag?

Use a spoon to fill the whites and smooth the tops, or make a quick disposable piping bag by filling a sturdy zip-top bag and snipping a small corner.