This is a yummy tart filling with a kick from the sake. Pairs well with white chocolate and vanilla.
Pit and chop the plums to a small dice. Leave the peel on, it gives a nice color.
Heat 1/4 cup water and plums over medium-high heat until boiling.
Reduce heat to low and continue cooking, stirring regularly until plums are soft, about 5 minutes.
Add sake and stir to combine.
Mix sugar and cornstarch together. Add to the plum mixture and whisk to combine.
Transfer to a heat proof bowl. Let sit at room temperature until cool. If making in advance, cover with plastic wrap and store in the refrigerator.