Mawlamyine Durian Jam (Duyin Yo)

Mawlamyine sits at the heart of Myanmar's durian country, and every rainy season the city gives itself over to the fruit — trucks in from the orchards of Mudon and Thanbyuzayat, pavements perfumed for a hundred paces. Duyin yo is what Mon State does with the glut: durian and palm jaggery cooked down, patiently, into a dense amber preserve that keeps the season in a jar. Yo is the Burmese word for fruit cooked into thick preserve, and of all the yo in the country, Mawlamyine's durian version is the famous one — the standard gift to carry back from a visit, the taste of the town in your luggage.

The preserve surely predates its paperwork, but it was the colonial decades — when Moulmein was a booming port, the first capital of British Burma, and the town Kipling put in his opening line — that made its fruit trade famous and put this jam into the record, so that is the era we honestly credit.

The technique asks one thing of you: presence. An hour of low heat and regular stirring is what converts durian's roar into butterscotch — the sulfur notes cook away and the caramel-custard depths remain, which is why committed durian skeptics are so often converted by the jam. There is no shortcut; high heat scorches the sugars long before it drives off the water. Put on some music, keep the spoon moving along the pan floor, and let Mon State's most famous fruit become its most famous sweet.