Carrot Cupcakes With Rau Ram Icing

This cupcake began with that papaya salad in Cambodia. It was unique among the papaya salads I've had because it had a hefty dose of rau ram. Rau ram, a southeast Asian herb (aka Vietnamese coriander), has a vaguely citrus-y taste that is strong, but doesn't overpower. (I find it very unlike coriander/cilantro, so I'm not sure where the alternate name came from.) It gave the papaya salad a lovely fresh sweetness that contrasted with the salty fish sauce, sour lime and green tomato, and hot chilies. (Image of rau ram borrowed from Kitchentoworld.com).

I had not tasted or thought much about rau ram in a while, but that papaya salad was a jarring reminder that it might be a fun flavor to play with in a cupcake. Its sweetness and citrusiness might play nicely with sugar, and could be used like basil or sage. So I spent some time thinking about this.

First idea was to see if I could come up with a cupcake based directly on the papaya salad. No fish sauce or dried shrimp, but a similar combination of hot, sour, salty and sweet (the four key flavors in Thai cooking). Green papayas and mangoes are not unlike apples or carrots in consistency, so I probably could have used them directly. The problem is that they don't have a lot of flavor; they're really more of a delivery device in the salad. I might try this later, but wasn't sure how they'd stand up in baking. So I decided to use carrots. They're sweet and have a similar texture; and carrot cake recipes are abundant.

The problem was that carrot cake recipes are loaded with cinnamon and nutmeg, flavors you'd never find within miles of a good papaya salad. That wasn't going to work. So I started to think about substitutes. I started with a carrot cupcake recipe from Epicurious.

Papaya salads start by mixing garlic cloves, fresh chilies, and salt with a mortar and pestle. Garlic seemed inappropriate for a cupcake, but there's no harm in chilies and salt. Ginger, however, is a taste that makes its way into both sweet and savory dishes. It can plausibly be substituted for either garlic or cinnamon in the right context. So by the transitive property, so I used a teaspoon of ground ginger in place of cinnamon, along with some cayenne powder instead of the nutmeg.

I still needed tartness, so I threw in the finely grated zest of a lime just before baking.

And I haven't forgotten about the rau ram, which is pretty easy to find in Toronto's Spadina Chinatown (but you have to recognize it -- nothing is labeled). It was, well, the icing on the cake. Borrowing another technique from Vanilla Garlic, I chopped up the leaves and cooked them with sugar and water to form a thick syrup. I then mixed this with cream cheese (from Mendel's Creamery), butter, and powdered sugar to get a rich icing with little flecks of rau ram.

We'll see what people think of these...

Update after eating: The cake was moist, delicious and gingery. If I do it again, I'd like to add a bit more chili so it burns more. The rau ram, unfortunately, got a bit lost. I'm going to think about ways to possibly make it stronger, and also incorporate it into other ingredients. Considering some herbal candies if I can come up with a way to do it...