It might be a bit of a stretch but if you are near a downtown SF BART station it's about a 20 minute ride to get to the Tribune Tavern in Oakland which is a block east from the 12th Street Oakland City Center station.
I haven't tried it yet but the kale salad is $10 and, according to the menu, has kale, roasted cauliflower, Brussels sprouts, pickled onions, walnuts and clothbound cheddar.
from this picture, looks good:
review by Jenny Oh of Bay Area Bites/kqed.org:
If when you get home you want to make your own kale salad, here's a recipe loosely based on the Tribune Tavern version:
401 13th Street
(at corner of 13th & Franklin Sts.
)Oakland, CA 94607