Choose your target texture: for the classic snow pea bite, pick a pea pod (snap peas or sugar snap peas).
If using a tougher vegetable (green beans), cut thinner and blanch 30–60 seconds before stir-frying for a closer crunch.
Use the ratio in the table: if your substitute is less sweet or less delicate, start with ¾ amount and adjust seasoning.
Finish by cooking time: add softer substitutes in the last 1–2 minutes, then toss off-heat so they stay crisp.
Taste and balance: brighten with a small splash of acid (like rice vinegar or lime) if the swap tastes flat.