[header] How to make soubise sauce [title] Melt 2 tablespoons (30 ml) of butter in a medium saucepan. [title] Add 2 tablespoons (30 gm) of flour to the butter to form a roux. [step] This is the first stage of any french sauce. 
[substeps] Always keep the ratio of butter to flour equal when making a roux. If you're making the sauce thicker, use 3 tablespoons (45 ml) of each.