I learned this meat recipe in a restaurant! Brilliant idea

I learned this meat recipe in a restaurant! Brilliant idea

Ingredients:
pork tenderloin: 2 pc
black pepper: 4 g (0.1 oz)
salt: 4 g (0.1 oz)
olive oil: 30 ml (1 fl oz)
red onion: 120 g (4.2 oz)
mushrooms: 350 g (12 oz)
white pepper: 2 g (0.1 oz)
OVER MEDIUM FIRE: 15 MIN

Sauce:
black pepper: 2 g (0.1 oz)
salt: 2 g (0.1 oz)
yolks: 5 pc
melted butter: 250 g (8.8 oz)
lemon juice: 10 ml (0.3 fl oz)
salt: 2 g (0.1 oz)
black pepper: 2 g (0.1 oz)

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