Zelda Breath of the Wild – How to Make a Fire to Sit By

The name, effects, and image of the food or elixir you produce is not important. The sell value of your cooking is entirely dependent on only two factors:

• The value of the ingredients you use
• How many ingredients you use

The price is determined by the following formula:

1. Add the value of the ingredients together.

2. Multiply this by:

   • 1.5 if you used one ingredient
   • 1.75 if you used two
   • 2.05 for three
   • 2.4 for four
   • 2.8 for five

3. Round the resulting number to the next ten. (101 -> 110, 87 -> 90, etc)

Here's an example:

You cook four Gourmet Meats. Each meat sells for 35 rupees. Add them together and you get 140. Multiply this by 2.4 because you use four ingredients. This gives you 336, so you need to round it up to the next ten, which is 340, the sale price.

So the most profitable meals and elixirs you can cook are simply the ones made with five of the most expensive ingredients you can find. Just make sure they actually produce something edible, because if you end up with "Dubious Food" or "Rock-Hard Food", they will sell for next to nothing.

Source: GameFAQs

When you read his diary, it mentions that the name of the dish is spicy meat and seafood fry. That's the clue that the last ingredient is fish.

Also, you don't have to specifically use raw meat. I was able to make it with raw drumsticks instead, which is a lot easier to get. I think it just has to have something spicy, some kind of meat, and some kind of fish, all of which is pretty obvious from the name of the dish.