Roughly chop the eggs. I use an egg slicer and slice each egg in 2 directions, - that gives nicely sized pieces.
Stir the crème fraîche and mayonnaise together, add the turmeric, curry powder, chives and the chopped eggs, - and season to taste with salt and pepper.
Warm your bagels, halve them and let them cool for a moment.
Top the bottom halves of the bagels with a few crisp lettuce leaves, and spread the egg salad on top.
If you like, sprinkle with a little extra finely chopped chives and freshly ground pepper. *You can also scatter over a little finely chopped pickled gherkin, - it gives a welcome contrast to the creamy, slightly rich texture of the egg salad.