A traditional English side dish
In a large bowl, whisk together flour, thyme, mustard, salt, pepper, eggs and half and half to form a batter. Allow the batter to sit for about 30 minutes at room temperature. You can also make this in advance and refrigerate for up to 4 hours.
When ready to bake, preheat oven to 450 degrees.
Place an empty muffin tin or popver tin in the oven to heat for about 5-10 minutes.
Remove pan from oven and pour 1/2 teaspoon beef fat OR butter into each muffin cup.
Stir the batter, if separation has occured. Divide the batter evenly among the 12 muffin cups. Quickly place back into oven.
Bake the puddings until golden brown, about 15 minutes.
They will rise about 1" above the pan.
Serve immediately.