How to make buttermilk

Ever wanted to try a new recipe that requires buttermilk, but realised you don't have any buttermilk on hand?  Or you don't want to pay for expensive and sometimes hard to find supermarket bought buttermilk?  Here are two alternatives, buttermilk substitute and traditional buttermilk.

Buttermilk Substitute
This can be altered for any quantity of milk, just remember the ration is 1 tablespoon of vinegar or lemon juice to one cup of milk.

You will need
- Just under 1 cup of milk
- 1 tablespoon of white vinegar or lemon juice

What to do
- Place the vinegar or lemon juice in a liquid measuring jug
- Add enough milk to bring the liquid up to the 1 cup line
- Let it stand for 5 minutes, then use

Real (traditional) Buttermilk
Takes 10 mins

You will need
- Heavy Cream

What to do
- Fill a jar halfway with the cream and screw on the lid.
- Shake the jar back and forth.  After several minutes the cream will thicken and turn into whipped cream.  Continue shaking until the cream separates into butter and buttermilk.
-Pour the buttermilk out of the jar and use

To use the butter - Knead the butter under cold water for a few minutes to remove and remaining buttermilk, as this will make the butter go off quite quickly.  Salt if desired and store in the fridge.