蒸或者加热你的薄饼。 把薄饼放在一大片铝箔上，再放一层长方形的墨西哥大米在薄饼的中间。 在米的上边放一些豆子。 加入适量的肉类。 在肉上边撒上一些奶酪（可选择的）。 添加差不多相同量的绿辣椒和西红柿。 在卷饼中加入少量洋葱。 加入酸奶油、牛油果酱和洋葱汁，三种成分的量大致相等。 卷饼的最上层放一些生菜。 把卷饼卷起来。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
. Flour burritos have a wonderful elasticity to them when exposed to heat and a little bit of moisture. If you don't have a burrito steamer handy, try zapping the tortilla in the microwave for 20 or so seconds. Remember to choose a burrito that's large enough. You can always work a too-big burrito, but trying to wrap a burrito with a tortilla that's too small will only result in headaches and sad ingredients. Do yourself a solid. The shape isn't too important, as long as you've given yourself ro