When making a full batch of tuna you will mix one pouch with 26oz (737g) mayonnaise. How much and mayonnaise would need when batch?

The question does not give instructions regarding the tuna batch you are making. However, following the proportion presented here is a guide to calculate the amount of mayonnaise needed for the preferred batch:

If 1 pouch of tuna is mixed with 26oz of mayonnaise, then:

Amount of mayonnaise = (Number of pouches of tuna) x 26oz

For example:

If you want to make a batch with 3 pouches of tuna, then:

Amount of mayonnaise = 3 pouches x 26oz = 78oz (2.2kg) of mayonnaise

If you prefer a different batch size, simply multiply the number of pouches of tuna by 26oz to calculate the amount of mayonnaise needed.