warm up cream, 70g butter, nutmeg and freshly ground black pepper.
whisk in arrowroot (to avoid lumps, add the arrowroot by sprinkling it in while you whisk).
continue to whisk until all lumps have disappeared and you have a smooth sauce, then remove from heat and set aside to cool down.
grate cheeses and reserve 30g of grated parmesan for the topping.
prepare cauliflower by cutting out leaves and core and dividing into florets.
put florets in a large tall saucepan.
add enough water to cover florets by about 2 cm.
add salt and turmeric and cover with lid.
bring to the boil, cook 4-6 mins until al dente and drain.
pre heat oven to 225°C fan (240°C static).
smear remaining butter over bottomed sides of an oven dish approx 24cm x 18cm and transfer cauliflower florets into it.
now the cream sauce has cooled, whisk in egg yolks one at a time.
add the cheeses and stir until nice and smooth; taste and adjust salt/spices if required.
spoon the sauce onto the florets ensuring they are all well coated.
sprinkle reserved Parmesan all over the top and bake for 10-12 mins until you see nicely browned peaks.
remove from oven, rest for a few minutes and serve.
Notes
Metric kitchen scales are an inexpensive yet invaluable gadget to enable accurate measurement of ingredients. Store them upright in a cupboard or over your worktop and they'll only take up a tiny bit of space. Click HERE for the ones I use.