From my friend, chef Ralph Stieber. A good basic method for cooking quinces, which turn a rosy gold color as they cook. This mixture also works well as a filling for tarts.
Peel the quinces. Halve, core and slice ¼inch thick.
Melt the butter in a wide nonreactive skillet over medium heat. Add the sugar and the quince slices and toss to coat. Cook until the sugar is melted and the slices are well coated, 5 to 7 minutes. Stir in the wine,