I had to check my measuring spoons after reading this thread yesterday and whether it is to make the maths simple or not, they are labelled as
1 tbl - 15ml
1 dst - 10ml
1 tsp - 5ml
1/2 tsp - 2.5ml.
Since 'wet' ingredients usually have a meniscus and always leave a coating behind, I have never been too scientific about exact measuring, especially if 'heaped' is used to describe some of the dry spices in the recipe and it also depends on the cooking temp and duration as well.
However, may I ask about the use of a pressure cooker? My parents had one in the mid/late 70's and my lasting memory of them is being shooed away into another room whilst they tried to remove the contents. It was not unlike an episode of Danger UXB if you ever watched it. So having never used one, I presume it merely cooks quicker without losing any moisture? Would a large pan with secure lid and a sprinkle (scientific quantity

) more water do the same job but take a lot longer?
Thanks in Advance.
BAJ