Dirk the other thing to think about with base recipes is that they differ in the way they cook the onions. Some call for frying in oil before adding the liquid ingredients whilst others call for putting them straight into a pot and boiling. Neither method will make any difference to the finished sauce.
If you wanted to be really cheffy about this and achieve the smoothest of sauces you could push the whole thing through a sieve but I think most people on here would agree that this is not necessary and doesn't represent the techniques used by BIRs which is basically the core interest of this site.
If you wanted to be really cheffy about this and achieve the smoothest of sauces you could push the whole thing through a sieve but I think most people on here would agree that this is not necessary and doesn't represent the techniques used by BIRs which is basically the core interest of this site.