How do you unlock the Grilled Cheese recipe in Fields of Mistria?

Grilled Cheese — Recipe Unlock: Buy the recipe at the Sleeping Dragon Inn for 400t..

Grilled Cheese

Restores 120 Health and 120 Stamina

Two slices of bread around molten cheese with a pinch of rock salt, grilled in butter.

Ingredients	Bread × 1 Cheese × 1 Rock Salt × 1 Butter × 1
Recipe Unlock	Buy the recipe at the Sleeping Dragon Inn for 400t.
Effect	Restores 120 Health and 120 Stamina
Sell Price	470

Requires cooking level 22. One of the best mid-game stamina foods at +120, and 470t per sandwich makes dairy farming genuinely lucrative.