Add water and snow peas to the Instant Pot. Close the lid and turn the valve to a Sealing position. Press the "Pressure Cook" or "Manual" button and set the time to ZERO (0) minutes on High pressure (the snow peas will cook enough while the Instant Pot is coming to pressure).
When it's done cooking, quick release (QR) the steam. Drain the cooked snow peas and sprinkle with salt and pepper to taste (additional optional seasonings that go well with snow peas are minced garlic, olive oil, sesame seeds and red pepper flakes).
Notes
You can use any quantity of snow peas, the amount of water stays at 1 cup and the cooking time remains the same.