Granitas are such an easy dessert, simple to make and you can make them with just about anything. I've posted several in the past, but can't imagine why I never made one with my favorite...rhubarb. So I gave it a try and loved the results.
The rhubarb recipes I am making and posting about now are made with hothouse rhubarb. It's a bright dark red, much brighter than lots of garden grown rhubarb one sees in the summer, so you won't always get this fabulous color if your rhubarb isn't a deep red. Doesn't mean it won't taste just as good.
1 cup sugar
1 lb. rhubarb, trimmed and cut into 1" pieces
2 tablespoons fresh lemon juice
Bring sugar and 2 cups water to a boil in a 2-qt. saucepan over high heat; cook, stirring, until sugar is dissolved, 1-2 minutes. Reduce heat to medium-high and add rhubarb; cook until tender, about 5 minutes. Strain though a fine-mesh sieve, discarding solids.
Pour into a 9" x 13" baking pan and place in the freezer.
Using the tines of a fork, stir the mixture every 30 minutes, scraping edges and breaking up any ice chunks as the mixture freezes, until granita is slushy and frozen, about 3 hours. Scoop into chilled serving glasses and serve with a sprig of mint.