What the heck is a hidden gem, anyway? The phrase rises from the mist of culinary cliché, a cheery, primordial beast eager to swallow any eye-opening San Francisco dining experience that wanders unchained out of our delicious quotidian. So precious! So unexpected! It's hard to lift a fork around here without poking it into something tasty and unique, be it handmade sushi in a Tenderloin liquor store or home-style Polish in West Portal. So why draw a line? This is a city of hidden gems by design — opening a Sizzler in SF limits would be front-page food news — and even those establishments that receive the most press would be labeled "kooky food" by puzzled Midwesterners. Good for them. Below is a handful of my personal hidden gems, called that for whatever reason — and to be a foodie show-off. (Marke B.)

CAFE ANDREE

A superb and tiny (26 seats only) gourmet nook in Nob Hill's Hotel Rex. It's a literal nook: the location is a former bookstore, and shelves still line the walls, making for clever service stations. Executive chef Evan Crandall's menu is heady and romantic — maple grilled pork chops, lobster mashed potatoes, and a fantastic beet Napoleon that'll have you swooning to the root.

Hotel Rex, 562 Sutter, SF. (415) 217-4001

EIJI

No Name Sushi down the block may trump this little Japanese joint near the Castro for scruffy hipster appeal (although reservations here are getting harder to come by), but Eiji holds all the cards when it comes to the house specialty: oboro, or handmade tofu, dutifully stirred to order and served at the table like a steaming custard. It's sweet and creamy, a cloud in a tureen. Specials such as whelk with uni powder and crunchy dried abalone also abound for the adventurous.

317 Sanchez, SF. (415) 558-8149

IL BORGO

Hidden in plain sight, Il Borgo is a kitschy-looking Italian place at the corner of Fell and Laguna that most people speed past on their way to the more boutique tastes of Hayes Valley. Ah, what they're missing: Northern Italian home-style cooking, heavy on the white beans; mind-blowing pastas (I still dream about the lobster ravioli); and extremely motherly service. Nothing here will be on your diet, but you can wiggle your hips to the awesome Italian pop music on the stereo and burn off a carb or two.

500 Fell, SF. (415) 255-9108

KATHMANDU CAFE

A Himalayan hot spot in the Western Addition — just the kind of multiculti mix that makes SF dining great. There's no yak, alas, but the butter chicken and dal ko jhol (lentil soup) will have you searching Orbitz for a night flight to Nepal. Also especially good: the momos (steamed Nepalese dumplings) and machha, a curry with fish cubes that melt in your mouth.

1279 Fulton, SF. (415) 567-5100

BASQUE CULTURAL CENTER

Northern California has a huge Basque population, which relocated here for the shepherding opportunities, and Basque cuisine — if you can get past all the x's, z's, and k's on the menu — is as hearty and satisfying as befits an ancient mountain people. The cultural center serves delicious rabbit stew and beef tongue, but it's the delectable traditional soups that really scale the heights.

599 Railroad, South SF. (415) 583-8091

BAMBOO ...