Peel the hard-boiled eggs and cut them in half, lengthwise. Remove the yolks and place them in a bowl.
Add to the egg yolks the curry powder and mayonnaise then combine until smooth. You may need to push lumps of the yolk into the side of the bowl to break them up.
Refill each egg half with the yolk mixture. This can simply be done by scooping it back in, or you can pipe it in for a fancier finish. If making a bulk version of this, aka doubling or tripling the quantity, piping is much quicker.
Arrange the filled curried eggs on a serving platter and keep them chilled until needed.