资料来源
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.foodnetwork.com%2Frecipes%2Ffood-network-kitchen%2Fice-cream-in-a-bag-5233580&psig=AOvVaw0csAuggQswbaewsDDTdBTQ&ust=1694139735249000&source=images&cd=vfe&opi=89978449&ved=0CA4QjRxqFwoTCIjxy6m5l4EDFQAAAAAdAAAAABAI