So I wanted to do something with this enormous watermelon I got, besides eating it in chunks and/or juicing it. There is only so much watermelon you can eat, or drink. I've always thought it would be nice to freeze watermelon pulp in the ice cream freezer, but I wasn't sure how it would come out. Actually, as I'm typing this, I'm still not sure how it will come out, but I'll let you know! I went over to
Epicurious and researched some recipes, and as usual, came up with my own version. So here's what I did:
Put about 1/4 cup water in a small bowl, and sprinkle 1 envelope unflavored gelatin over it. Leave to soften.
Put 1/3 cup water and 1/3 cup sugar in a small saucepan and heat over low heat, stirring occasionally, until all the sugar is dissolved. Pour the sugar syrup into the softened gelatin and stir for a while to be sure all the gelatin is dissolved. Leave on counter to cool.
Put your watermelon in the sink, rinse it off, and cut it in half (mine didn't actually fit in the sink, but the halves did. You can cut it lengthwise or the short way to get the pulp, it doesn't matter. Put your blender right next to the sink, and scoop watermelon flesh, seeds and all, into the blender. Whirl the flesh, on low speed, until it's all pulp and seeds. On low speed, it won't cut up the seeds. Strain the pulp through a colander (not a strainer - a colander with round holes is best) to remove the seeds.
Measure 4 cups watermelon puree into a half-gallon pitcher. Mix in 2 tablespoons limoncello liqueur, and then the cooled gelatin mixture. Place the pitcher in the refrigerator to chill. If you don't have limoncello, you can use fresh lemon juice and perhaps some vodka. The alcohol is intended to keep it from freezing solid once the sorbet is made, but it's optional.
When the mixture is cold, process in your ice cream freezer, according to the manufacturer's instructions.
You will likely have a lot more watermelon puree than you'll need. I like to strain the rest through a strainer (a fine sieve for this second straining), and keep the juice. It's sweet, an AMAZING red color (like Hawaiian Punch, seriously, but all natural!), and it mixes very nicely with vodka! I'm sure that like all juices, the sugar is way too isolated to be healthy, but hey, it's a once-a-summer indulgence.
Now, I'm currently at the "chilling the mixture" stage. It tasted pretty good, but the big question is, how will it freeze up? Last time I used my little ice cream freezer (eggless gelatin ice cream), I didn't get the gelatin all the way dissolved (cream wasn't hot enough) and I didn't chill the mixture before putting it into the ice cream freezer. So I'm hoping these two steps will help. Since watermelon is so sweet to begin with, I added the gelatin, to help with the texture without overdoing the sugar.
Once it's frozen, I'll update with results!
Update One: Once the ice cream freezer had pretty much done its job, I scooped the sorbet into a container and put it in the freezer. Later that night, I mixed it up a little - the inside was still soft, outsides beginning to get hard. Scooped some out and ate it - the texture was silky, the color deep pinkish red, and the flavor was wonderful - sweet, with a limoncello aftertaste. I think the silky texture is from the gelatin, so I was pleased with this addition.
Update Two: The next day, it was frozen pretty much solid. I tried to scoop some, and ended up scraping it up into the ice cream scoop, which has a very useful thin aluminum edge. I found myself wishing I'd smoothed the top of the sorbet before I put it back into the freezer the night before; it would have made the scraping easier. Since it was icier, from being frozen and scraped like a granita, it came out a much lighter color, a lovely lighter pink. It was still sweet and delicious, and actually the limoncello overtones had calmed down, which was good.
Conclusion: I declare the watermelon-limoncello sorbet a rousing success! Something I've always wanted to try, and it came out great. Go me! ;-)