Step 1

Heat oil in a saucepan over medium heat.

Step 2

Add flour and whisk until well combined, about 1 minute.

Step 3

Add remaining ingredients except salt and pepper, whisk, bring to boil, then reduce to simmer.

Step 4

Simmer for 10 minutes or so, until thickened, whisking occasionally.

Step 5

Season with salt and pepper.

Step 6

This can be stored for up to 1 week in the refrigerator in an airtight container. It also freezes well.