What's this thing?

Here in Vietnam, households don't have ovens. Bakeries have ovens, only expensive and posh restaurants have ovens, but your typical Vietnamese household doesn't have an oven. It's just not customary in this culture to bake. So I was over the moon when my friend, Michelle, invited me over to her house to bake brownies and chocolate cake. However, her circa 1965 oven didn't even work. Sad times all around.