[udonboi]

I know traditional vegetable curry comes with onions, carrots, and potatoes, but I made curry last night with just broccoli. So, it ended up being broccoli in a curry sauce with rice. Do Japanese people ever make curries with just one vegetable, like just mushrooms, curry sauce and rice for example. The reason I ask is because the recipes I see online seem to focus on the big 3 (onions, carrots, and potatoes).

Please give your opinion about this, thank you. I am a vegetarian, so I can't put any meat (beef, pork, chicken, etc.) in it.

Everything else about my curry recipe is traditional. I buy everything from the asian grocery and I have had a few Japanese friends approve of my recipe. However, I have one friend that tries to tell me that if I use just broccoli, then it is not authentic, which bothers me, because I work very hard to make my recipes authentic.