Make this recipe a recipe that people in that category can eat. categories: ['low_calorie'], recipe: put egg yolks, lemon juice, vinegar, prepared mustard and pinch of cayenne pepper in a jug. beat until thick and creamy (a handheld blender is just great for this!). heat butter slowly until melted and bubbly. remove from the heat and slowly add to the egg yolk mixture. combine well. (to absorb the butter into the egg yolk mixture). beat until smooth and thick. serve straight away (before the sauce loses it's heat)!

Target recipe: use double boiler or like me - place a strainer/sieve over a sauce pan of water and place a bowl in the sieve. beat yogurt, lemon juice, egg yolks well heat over simmering water, stirring frequently, until sauce has thickened, approx 15 min (sauce will become thinner after about 10 min and then thicken again). remove from heat and stir in salt, mustard, pepper and dill/parsley (if using).