The unofficial line is about 4 litres, but anything above 2.5 is good!!
I didn't like the shep pie either, or chilli first time round, but persevered and not as bad!! Mind you, I find myself adding Tabasco and salt&pepper to most savoury!!
I hated the porridge!! Wasnt real enough for me!! I'm used to oats so simple and it's a poor substitute!!! X