Steamed Yam Cake (芋头糕）

Name: Steamed Yam Cake (芋头糕）
Cuisine: Asian, Chinese
Ingredients: 700g yam, cut into small cubes; 1/4 tsp five-spice powder; 250g rice flour; 40g tapioca flour (or cornflour); 30g wheat starch (澄麵粉); 1250ml water; 3 tbsp cooking oil; Seasonings; 1 tsp salt; 1.5 tsp sugar; 3/4 tsp white pepper; 2 tsp chicken bouillon powder (optional); 1/4 tsp five-spice powder; Toppings; 150g dried shrimps (washed, soaked for 10 min, then blitz in food processor or chopped); 6 cloves garlic (47g), minced; 5 shallots (100g), finely sliced; cooking oil; Garnishings; spring onions, chopped finely; red chillies; ground toasted peanuts (optional); toasted white sesame seeds (optional)