I don't think I mentioned that in addition to the chawanmushi, I came across something called "Egg Muffins" in a low carb cookbook which is practically the same ingredients, basically the same assembly, but instead of steaming or baking in a bain-marie as is usual with a custard, it's baked in a hot oven till it puffs up a little and browns a bit and somewhat resembles a muffin. Pretty tasty, and doesn't necessarily require a fork.
So anyway, next up is a batch of those made with ham and cheese. I just need to decide between sharp cheddar and gruyere. It's a tough call. I bought the gruyere because it sounded good with ham, but the cheddar might be calling more to me. Hm.
Well, not gonna make any tonight, so I can sleep on it.