If you live in the area, I recommend stopping in at a Cafe Decartes near you and trying one for yourself. If not, try out the recipe below. You could substitute strong coffee or add espresso powder to the milk if you don't have an espresso maker, and just scald the milk by heating it until it bubbles around the edges. I felt the collective cringe of coffee geeks everywhere as I wrote that, but really, I think it would work out okay.
If you're a purist, you can learn all about making espresso drinks at home on the CoffeeGeek website. From what I understand (and I would say that my understanding is limited) the easiest and least expensive way to accomplish this is to use a Bialetti Moka Express
Cafe Descartes Oatmeal Latte
8 oz Oatmeal, uncooked
2 Tbsp. Golden Raisins
2 Tbsp. Chopped Walnuts
2 Tbsp. Slivered Almonds
1/2 tsp. Cinnamon
1 Shot of Freshly-Roasted Cafe Descartes Espresso
1 tsp. Honey
1 Tbsp. Hazelnut
8 oz. Skim Milk
2 Tbsp. Fresh Blueberries
Pour 8 ounces of raw oatmeal into a large cup.
Add the dry ingredients to the cup: 2 tablespoons each of golden raisins, chopped walnuts and slivered almonds; and 1/2 teaspoon of cinnamon.
Pour in a shot of freshly-roasted espresso.
Add 1 tsp. honey and 1 tbsp. of hazelnut or vanilla syrup into the cup.
Froth 8 oz. of skim milk in a stainless steel pitcher, for about 10 seconds.
Add the other ingredients to the milk.
Froth all the ingredients together, about 15 seconds.
Add 2 Tbsp. of fresh blueberries to top it off.
Pour back into the cup and enjoy!