@JumpLeadsForTwo - the taste is much stronger from a stock cube vs home-made stock, but that's not surprising when you look at the ingredients list... (knorr chicken cube)
Salt, starch, vegetable fats (palm, shea, sal), yeast extract, sugar, chicken fat (3%)[chicken fat, antioxidant (extracts of rosemary)], flavourings, chicken (1%)[chicken, salt, antioxidant (extracts of rosemary)], spices (turmeric †, pepper, CELERY seeds), lemon juice powder (maltodextrin, lemon juice), onion powder †, parsley †, caramel syrup, maltodextrin.
Over 90% of a stock cube is salt, starch, fats, sugar and yeast extract.
There are very few recipes that actually NEED stock - I almost always use water, and then season to taste (salt, pepper mainly). Most dishes don't rely on stock for flavour because you've already added spices or vegetables with flavour in their own right. It's just that we've become conditioned to using stock products (which are largely salt).