Fruity Yogurt: or some ideas for using the sweetened condensed milk you opened by mistake

A few days ago I needed some milk for a recipe, and didn't have any regular milk, so I went to my trusty pantry and opened a can of what I though was evaporated milk, so that I could dilute it to make it regular milk, but as soon as I opened it, I realized my mistake, it was sweetened condensed milk. So I dumped it into a jar and put it in the fridge and found a can of evaporated milk and went on to do my thing.
I had to think for a few days to figure out what to do, it would be such a shame to waste sweetened condensed milk, something I hardly ever buy. I though of making dulce de leche, but I'm afraid of explosions, and I don't know exactly what to do with dulce de leche. I remembered this thing we had from an asian bakery/cafe that was sort of like a slurpee, but it had chunks of mango with shaved ice and sweetened condensed milk drizzled over it, it was very yummy, but there were not any mangoes at the grocery store. And then this recipe that looks like Almond Joy candy bars caught my eye as well as this other candy, called brigadeiros, from Brazil, but both of them seem way to sweet for me to handle right now. I will probably still make the almond joy things sometime, but do them the same as I did my macaroons, with unsweetened coconut. And then I saw this recipe for vietnamese yogurt, and it is the solution to (almost) all of my problems. Lovemuffun and Pricklypear both eat a lot of yogurt, and I am always fighting with the Lovemuffin because he eats his with a ton of jam, the jam that I made all by myself, and then there is never enough jam or yogurt for me, which frusterates me. So, here's what I did:

Fruity Yogurt
1 Large tub of plain yogurt with no added weirdness (no gelatin or corn starch for thickening)
1 Bag of frozen fruit of your choice
Some sweetened condensed milk, to taste (I used about 1/4 of the can)

Drain the yogurt over a sieve lined with cloth or just a paper towel. Let it drain for several hours till the yogurt is nice and thick, like greek style yogurt. It is nice to have it thick because the fruit will add more fluid and this is an easy way to keep it from turning into drinking yogurt. Unless you want drinking yogurt, that is okay with me, this is a very flexible recipe. Thaw the frozen fruit while the yogurt is draining, then blend the fruit up a little, so that it is chunky, not too fluid. Add the fruit to the drained yogurt, and add sweetened condensed milk to taste. You could, of course, just sweeten your yogurt with sugar, but where is the fun in that? Also, I think that would make it runnier, because of the way sugar pulls the juice out of fruit.
This large batch will last us about 3 days and I like it so much more than the pre-fruited and sweetened yogurt at the store. You can make it the level of sweetness you desire, and you can be sure that there is real fruit in there, not just artificial colors and flavors. So far I have used blackberries and a fruit medly containing strawberries, blueberries and blackberries, and I still have plenty of sweetened condensed milk. Up next is peaches.