Shanghai Smashed Cucumber Salad

Smashing a cucumber instead of slicing it is the single technique that makes Shanghai-style cucumber salad distinctive. A smashed cucumber has rough, jagged edges with irregular surface area that grips sauce dramatically better than a clean slice. The smash also breaks open the cell walls, releasing moisture and creating porous surfaces that drink in seasoning.

The technique is straightforward. Lay cucumbers on a cutting board and press down firmly with the flat side of a knife or a frying pan until they crack open. They should look fractured, not pristine. Then rough-chop into bite-sized chunks. Don't slice cleanly. Irregular broken edges are the goal.

Salt is the next step. Tossing the smashed cucumbers with a half teaspoon of kosher salt and letting them sit for 10 minutes pulls out excess water. This concentrates the flavor and prevents the dressing from diluting. Don't skip this. An unsalted version of this dish tastes watered-down, no matter how strong you make the sauce.

The dressing is Shanghai-style, which means Chinese black vinegar (Chinkiang) is the signature ingredient. Black vinegar has a deep malty character that light soy and rice vinegar can't replicate. Combined with finely grated garlic (microplaned, not minced, so it dissolves into the sauce), light soy, sugar, chili oil, and sesame oil, the dressing balances sour, salty, sweet, spicy, and aromatic notes into one of the most potent cucumber salads in the Asian canon.

Toss the cucumbers in the dressing and serve immediately for maximum crunch, or chill 15 to 30 minutes for deeper flavor as the dressing soaks into the cracked surfaces. Extra chili oil on top, optional red chili slices, sesame seeds. A banchan-style cold dish that works alongside almost any Chinese main.