Retrieve Data From A Table + Calculations With That Data

I have 2 sheets - one called 'Lookup' that has a table of recipes in the rows and ingredients in the columns. The cross reference of each is the required quantity of that ingredient, if any (obviously..). Both rows and columns are sorted alphabetically.

In the second sheet - Recipe - I have a subset of the recipes (e.g. 'Cakes') along with the applicable subset of ingredients. I've input these by hand, so I assume they can be referenced directly in the function. What I need to do is grab the quantity out of the table for each recipes ingredient. E.g. A6 will have the recipe 'Jamrolypoly' and H1 will have the ingredient 'Jam'. H6 needs to return the value from the table in Lookup.

I'm still (very) new to this but looking around I found the following which seemed to describe the function I am after:

=VLOOKUP(H1, Ingredients, MATCH(A6, Ingredients, 0))

(Ingredients is the name of the table in the Lookup sheet)

I then need to be able to use the returned values in separate equations on sheet 2 to work out costs. This bit I've done already but I've heard that some of the methods of data retrieval return 'N/A' if there is no value, and that would not allow any subsequent calculations using the value.