Grilled Pork Skewers With Ginger

• 525 gr pork butt (boneless)
• 30 gr ginger (minced)
• 30 ml soy sauce
• 16 ml pineapple juice
• 8 gr garlic (minced)
• 16 ml rice wine vinegar
• 1 gr cumin (ground)
• 1 gr ancho chile powder
• 3/4 slices sweet onions in (red cut)
• 1/2 slices marinade