I have this table made in Excel in which the rows represent a (ceramics) recipe. Each column represents an ingredient. My first row is in use to mark (with an "X") an ingredient which I have in my stock. In column BM I count the number of ingredients needed per recipe.
Now I would like (per recipe) to count the ingredients I own, so I know which recipes are able to be mixed or are nearly able to be mixed by me.

For example: The recipe "amberceladon" needs 7 ingredients (BM3). In the columns showing on the screenprint-image it's clear that I have "siliciumoxide" (AV1) in stock (the "X" in AV2). I would like to have expressed in BN3 the number "1". That way I know the "amberceladon" isn't to be mixed at this time, 'cause of lack of ingredients.
Just in case you wonder: the image doesn't show all columns, that's why the numbers in BM don't match what you see...


