1 tbsp Worcestershire sauce
2 pinches cayenne pepper
1 tsp mustard powder
olive oil
4 slices thin white bread (square)
dash cream (if mixture is too thick to spread)
2 free-range egg yolks
250g/9oz ²µ°ω³ά²βΓ¨°ω±π cheese, grated
4 thin slices cooked ham