This is a variation of the classic asparagus treatment, steamed asparagus with hollandaise sauce. The additional spicing works well with the pronounced flavour of the grilled asparagus.
Melt and clarify the butter. To do this, heat the butter slowly so that it separates into butter oil above a puddle of milky salt water. Pour off the butter oil into another jug or saucepan without adding any of the residue.
Heat the saffron and almonds in the white wine, then pour into a heatproof bowl. Whisk in the egg yolks.