This dish came together via a fridge cleanout. I had half a green cabbage in the fridge, and a small head of broccoli which needed immediate attention. Staple vegetables like these can be treated gently, easing their way into almost any dish, but I wanted to push them out of their comfort zone. My answer was rice cakes and black bean sauce.
Rice cakes are not yet widely available at Western grocery stores. Trader Joes had some for a while but I haven’t been there recently so not sure if they still stock them (let me know in comments if you have purchased them there lately). Asian grocery stores will almost always have them nowadays – places like H Mart are sure bets, as are smaller neighborhood Japanese/Korean grocery stores. Chinese supermarkets have plenty of them too. They sometimes come frozen or vacuum sealed in the fridge section. They can be sliced or in long chubby sticks (sometimes even thumb-size chunks). All varieties are fine for this recipe.