Just had lunch at the Home Cafe at ninth and Grayson in west Berkeley. It's an unassuming little diner on the corner. They have standard diner fare of burgers, sandwiches, breakfast, etc, and they also offer a small selection of no-nonsense korean food: a few iterations of bul gogi and, on the specials board, spicy pork.
From the looks of it, the 'bul gogi' is sort of all-purpose sauteed beef that they use in the korean dishes and also in their cheesesteak sandwiches, as the bulgogi my companions ordered had mushrooms, grilled onions and peppers in it. I had the Bul Gogi Steak Sandwich, which was pretty much like a cheese steak except the meat had that smoky sweet marinated flavor of bul gogi, and also it had lettuce and tomatoes and some kinda sweet spicy honey mustard along with the requisite grilled onions and peppers (this is philadelphia style korean...).
Not earth-shattering, but certainly not the diner I was expecting -- always nice to be surprised. If you work in the area and don't already know about it, check it out. On the way out I noticed that everyone else in the restaurant was eating the korean dishes. I wonder what their breakfasts are like....
900 Grayson St.
Breakfast served till 11, till 1 on sat