When a receipt requires a liter of stock, you can dilute two stock cube in 1 liter of water and pour in.
My question is, why not just add the water and the cubes directly into the food that your making, without mixing the two prior to adding it?
Is there any reason not just add them unmoxxed and just stir a few times more that you’d have to?
Cubes are a substitution, and while a super common one, are not quite the same thing. That said, yes, you do not need to turn them into “stock” by pre-dissolving first.