Product with multiple options

[ambge]

Good morning,

I explain my problem briefly.

I'm riding a feed supply store. In several situations I find the following problem:

There is a base product and can be added up to 4 ingredients with no increase in cost. That would be no problem if there were few ingredients to choose from, but is that in the worst case there are 40 ingredients. With combinations of attributes is impossible since it would leave 256,000 combinations.

The truth is that if you have no solution, but the store demands it.

 

Thank you very much in advance.