Simmmer.

Step 1 of 6

Yorkshire Puddings

Step 1 of 6

Heat oven to 230C/fan 210C/gas 8. Drizzle a little sunflower oil evenly into two 4-hole Yorkshire pudding tins or two 12-hole non-stick muffin tins. Place in the oven to heat through.

The oil must be smoking hot before you add the batter — this is what creates the crisp rise.