Asda’s “Simmer Sauce Mix – Hollandaise” is fine if you make up following the instructions, using semi-skimmed milk and Flora Cuisine instead of butter, and adding plenty of salt and pepper.
The resultant sauce comes in just under 2g of sat fat per 100g, vs e.g. 7.5g for Maille’s pre-made Hollandaise sauce.
Parsley and/or dill could be added to make a sauce for fish.
Spinach is nice added for, e.g. for fried or poached eggs on toast.
For Béarnaise sauce, add a very small amount of finely diced onion, tarragon and substitute some of the milk for white wine (further reducing the sat fat content e.g. swapping half of the milk for wine will reduce sat fat content to just under 1.5g of sat fat per 100g)
