What fillings do Tianjin Goubuli buns have to be specific?

There are minced meat, white radish, soy sauce, chopped green onion, pepper oil and thirteen spices. The filling method is as follows:

Preparation materials: 500g of minced meat, 200g of white radish, 30g of soy sauce, 30g of onion powder100g, 30g of pepper oil, and 10g of thirteen spices10g.

Rub the white radish first.

Second, blanch the white radish in hot water for one minute.

Third, remove cold water.

Fourth, after pouring the soy sauce, stir it evenly.

5. Pour in100g chopped green onion.

Sixth, then pour in 30 grams of pepper oil.

Seven, pour thirteen incense 10g.

Eight, after stirring evenly, finally add shredded carrots.

Nine, after mixing evenly, the steamed stuffed bun is finished.