Light Eggs Benedict

Method

1. 1Beat yolks, yogurt, mustard, lemon and salt over low heat till just thickened — never let it cook into curds.
2. 2Stream warm butter in slowly, beating, till the sauce coats the spoon; put aside in a warm spot.
3. 3Toast English muffins; pile wilted spinach on each half.
4. 4Bring water with vinegar to a gentle gently bubble; swirl, slip eggs in, gently gently bubble 4 minutes for jammy yolks.
5. 5Lift eggs with a slotted spoon, blot.
6. 6Place on spinach, spoon hollandaise over, dust cayenne and chives — brunch theatre, light version.