Sweet and Spicy Chicken Rack 1lb mild

I have bought it twice. I bought it again because I like the taste. But both times it has different degrees of sour/sour taste. I saw some friends in the comments area who felt the same as me. It's so hot, if the store can't guarantee freshness, it's better not to make this product

The duck feet are delicious. I bought the chicken rack again and it has a slight sour taste.