Peel and finely dice 1 onion. Mix oil, diced onion and Sambal Oelek. Clean the chilli pepper, cut lengthwise, remove seeds, wash and cut into rings. Add to the onion-oil mixture with coloured pepper.
Wash the meat and dab dry. Cut into approx. 24 thin strips (approx. 40 g each) and skewer them on wooden skewers in a wavy shape. Place in a flat dish and spread the oil marinade on top.
Cover and marinate in the refrigerator for about 30 minutes. In the meantime, halve the avocados, remove the stone and scrape the flesh out of the skin with a tablespoon. Puree the avocado and lemon juice with a blender.
Peel and finely chop the garlic and remaining onion. Add to the avocado cream and stir in. Season with salt, pepper and sugar. Grind nuts finely in a universal chopper and stir into the avocado dip.
Drain the skewers. Heat some oil marinade in a pan and fry the saté skewers in it in portions on both sides for 3-4 minutes. Season with salt and pepper. Arrange on a plate with the avocado dip.
Serve garnished as desired with chillies and macadamia nuts.