Whisk ponzu, shallot, ginger, and black pepper.  Place skirt steak in the marinade for at least an hour.  Meanwhile prepare the rest of the ingredients. Warm up tortillas in the microwave or oven. Lay out sriracha mayo, pickled veggies, jalapeno slices, cilantro and avocado.

Just before serving.  Preheat grill or broiler on high.  Grill skirt steak for 3-4 minutes per side, until just cooked rare.  Remove from heat and let rest 5 minutes, slice and serve.

Each person can assemble their taco as desired, spread the mayo, top with pickled veggies, meat, avocado, cilantro and avocado, squeeze a little bit of lime juice and enjoy.

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