Malay wedding-style beef liver: When you're craving for kenduri cuisine

Ingredients

• 250g beef liver
• 2 tbsp flour
• 1 tbsp black peppercorns
• 6 small red onions, peeled
• 4 garlic cloves, peeled
• 2″ knob ginger, peeled
• 1 tsp salt
• 1 tsp turmeric powder
• 2 tbsp neutral cooking oil
• 1 tbsp thick soy sauce
• 1 tbsp oyster sauce
• 2 tsp tamarind paste OR 100ml tamarind juice from a 2″ knob of tamarind fruit
• ½ large onion, peeled and sliced
• 4-5 stalks green beans, sliced
• Sugar to taste (optional)