For the marinade, mix beer, lime juice, sugar and 2 tablespoons of oil. Season vigorously with chipotle powder, paprika, 2 tsp. cumin and approx. 1⁄4 tsp. pepper. Dab steaks dry and quarter them crosswise. Mix with the marinade.
Cover and chill for about 1 hour.
For the chilli sauce, clean the peppers, cut them in half lengthwise, remove the seeds, wash and dice very finely. Wash the coriander, shake dry and chop. Peel, chop and crush garlic. Mix 8 tbsp. oil, pepperoni, coriander and garlic.
Season with approx. 1⁄2 TL salt and cumin.
Remove the meat from the marinade, let it drip off a little, season with salt and put it on skewers of shashlik. Grill the skewers on the hot grill for 4-6 minutes, turning them medium. Serve with the chilli sauce.