Homemade Bisquick

I found this recipe a couple years ago, unfortunately I don't remember where. It makes about 10 cups, so have a large airtight container ready.

Homemade Bisquick

9 c. flour
1 ½ Tbs. salt
¼ c. baking powder
2 c. shortening

Place the first three ingredients in a large bowl and blend thoroughly. Add shortening and mix with a pastry blender or fork until mixture resembles fine crumbs. Store in an airtight container.
**I have successfully substituted this mix in many Bisquick recipes without failure. It keeps for 2-3 months in the pantry.