Roll into a ball, wrap in cling film and chill for 30 minutes. To make the beef taco filling, heat the oil in a large frying pan and cook the onion and peppers for 5 minutes, or until softened.
Put the beef, onion and pepper in a wide-based saucepan ... If you have a good spice cupboard you can make your own blend of spices instead of buying the fajita mix. Combine 2 tsp ground cumin ...
Season with salt to taste. To serve, set out a stack of warm tortillas along with cooked beef, yogurt-feta mixture and salsa. Allow guests to build their own tacos.
Make the pickled onion ... Prepare the cheeks: Clean and trim the beef cheeks. Put them in a container in which you can marinate them. Remove the stem and seeds from the ancho chili, cut it ...
Beef tongue is light and pillowy ... Portions are generous enough to make each taco feel like a meal. The shaded picnic tables add a laid-back vibe perfect for chowing down.