Combine flour, salt, butter, and cream cheese in a bowl.

Cut the ingredients together with a fork until well combined, similar to pie crust preparation.

Roll out the dough on a floured surface until it is very thin.

In a separate bowl, mix liverwurst with lemon juice until well blended.

Spread the liverwurst mixture evenly over the rolled-out pastry.

Roll up the dough tightly, as if making a jelly roll.

Wrap the rolled dough in wax paper.

Refrigerate or freeze the wrapped dough for at least 15 minutes

Preheat oven to 450°F (232°C).

Remove the dough from the refrigerator or freezer and unwrap it.

Cut the chilled dough into thin slices to form pinwheels.

Place the pinwheels on a baking sheet.

Bake in the preheated oven for 10 to 12 minutes, or until golden brown.