Go ahead and whisk just until a nice paste forms.

继续搅拌直到形成漂亮的糊状物。

This morphine is then reheated with ammonia before an additional stage involving more filtering and boiling until a brown paste forms, which is left to dry in the sun.

然后用氨水重新加热吗啡， 然后再进行更多过滤和煮沸，直到形成棕色糊状物， 然后在阳光下晒干。