Roast Duck Red Curry (Gaeng Phet Ped Yang)

Red curry is the test. If you can make a proper gaeng phet, you understand Central Thai curry. The kreung tam is the same whether you're currying chicken, pork, or duck. That's the principle: the paste is the foundation, the protein is the variable. Ajarn always said, "Learn one kreung tam and you can cook twenty dishes." Gaeng phet is where you start.

But this version, ped yang, roast duck, is where the principle gets interesting. You're taking a Chinese-style roasted bird with lacquered, fat-rendered skin and dropping it into a Thai curry system. The duck doesn't cook in the curry. It's already cooked. You're adding it at the end so the richness of the roast duck fat meets the heat of the paste and the sweetness of the coconut cream. The fat from the skin dissolves into the sauce and changes everything. It gets richer, silkier, more complex. This is Bangkok cooking at its best: absorbing an outside technique and running it through Thai principles.

The fruit matters here. Pineapple and cherry tomatoes aren't garnish. They're sour. In gaeng phet ped yang, the tropical fruit provides the acid that balances the fat of the duck and the sweetness of the coconut cream. Fish sauce for salt. Palm sugar for sweet. Pineapple and tomato for sour. Dried chilies for heat. All four pillars, working harder than usual because roast duck is a heavy protein. The balance has to compensate.

Crack the coconut cream first. Always. Fry the paste in the separated cream until the oil floats red on the surface. That's how you know the paste is cooked and the curry will have body. If you dump everything into a pot and simmer, you get soup. Crack the cream, fry the paste, build the curry in layers. Principles, not recipes.