Pour 1 cup (8 fl oz / 240g) of water into the inner pot of your Instant Pot and place the steamer basket directly over the water.
Place the 4 trimmed and halved endives (approx. 14. 1 oz / 400g) evenly inside the steamer basket.
Seal the Instant Pot lid tightly and ensure the pressure valve is set to the sealing position.
Set the Instant Pot to cook on manual mode at High pressure for exactly 10 minutes.
Allow the pressure to release naturally for 10 minutes once the cooking cycle is complete, then carefully remove the lid.
Transfer the steamed endives to a serving platter and toss them gently with 0. 1 tsp. (0. 02 oz / 0. 6g) salt, 0. 1 tsp. (0. 01 oz / 0. 2g) black pepper, 1 tsp. (0. 07 oz / 2. 1g) ground nutmeg, 2 tbsp. (1 fl oz / 28g) olive oil, and 1 tbsp. (0. 1 oz / 3g) chopped chives.
Add a Finishing Sear: For an elevated texture and a beautiful caramelized presentation, heat a cast-iron skillet over medium-high heat.
After steaming the endives in the Instant Pot, quickly sear them cut-side down for 1-2 minutes before tossing them in the nutmeg and chive seasoning.