In a small bowl, mix together the soy sauce, rice wine vinegar, brown sugar, oyster sauce, and sesame oil. Set aside.
Heat the vegetable oil in a wok or large skillet over high heat and add the shrimp and stir fry until pink (about 2 minutes). Remove from wok and set aside.
Using the same pan, add in the garlic and ginger and stir to combine. Cook for about a minute.
Pour in the sherry. Stir it around, scraping the bottom of the pan to loosen all the flavorful bits that may have stuck to the wok. Cook for about 2 minutes to cook off the alcohol.
Turn the heat to medium-low and pour in the sauce mixture, then mix in the cornstarch mixture. Stir the sauce for 1 to 2 minutes to thicken, then add the cashews and pepper (to taste). stir to coat everything with the sauce. You can add a little water if the sauce looks too thick. Add the shrimp to the sauce.
Sprinkle on the green onions. Serve with cooked rice.
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Notes
Erren’s Top Tips
Prep Everything First This recipe moves fast, so get all your ingredients chopped, measured, and ready before you even turn on the stove. Trust me—it makes a huge difference.Don’t Overcook the Shrimp Shrimp cook in literally two minutes. As soon as they turn pink and curl, pull them off the heat. They’ll finish cooking when you add them back into the sauce.Grate Your Ginger with the Skin On If your ginger is fresh, you don’t even need to peel it—just use a microplane or fine grater and go for it. Bonus: less mess, more flavor.Use Cold Water for the Cornstarch Slurry Cornstarch clumps in warm water, so always mix it with cold water before adding it to your sauce. This little tip keeps your sauce smooth and silky.Toast the Cashews (Optional But So Good) If you have an extra minute, toss your cashews in a dry pan before adding them in. It brings out a deeper, nuttier flavor that makes this dish pop.
Storage & Freezing Instructions
Fridge Storage Leftover cashew shrimp will keep well in an airtight container in the fridge for up to 3 days. Reheat gently in a skillet over medium-low heat with a splash of water to loosen the sauce and keep things glossy—not gummy.Freezing Instructions Shrimp can get rubbery when frozen and reheated, so I don’t recommend freezing the whole dish once it’s cooked. BUT—you can prep the sauce ahead and freeze it in a jar or zip-top bag for quick dinners later. Just thaw, cook your shrimp fresh, and you’re golden.