Wash the greens, shake dry, then roll up in a towel to help blot the moisture.
Wash and thinly slice the onions after removing the roots and tips.
Peel and mince the garlic.
Wash and thinly slice the jalapeño, if using. (Wear gloves.)
If using Swiss chard, stack the leaves, then cut off the stems using a deep V cut. Thinly slice the stems and set aside separately. Thinly slice the green leaves.
Thinly slice the kale crosswise.
Heat the ghee or coconut oil in the large frying pan or sauté pan over medium-high heat. Add the onions, garlic, and jalapeño (if using) and sauté until golden, about 5 minutes.
Add the chard stems and cook another 3-4 minutes. Add the rest of the greens and a lid to help them wilt. Once they have wilted a bit, add both kinds of sesame oil, stirring to coat.
Add the seeds and continue to sauté, with the lid off, until cooked through, about 20 minutes total.
Notes
If you do not like spicy food, skip the jalapeño and the hot sesame oil. You can use all Swiss chard or all kale for this recipe if you prefer.