Rare Dried Whale Vomit Discovered

Ken Wilman, while walking his dog Madge on the beach, discovers a peculiar object that turns out to be ambergris, also known as whale vomit. Initially dismissive, Ken later realizes its value after researching online. The find, worth potentially over €100,000, is a significant financial boon for Ken, who is unemployed and a single father. Ambergris, despite its unpleasant smell, is highly valued in the perfume industry for its rich aroma. Historically, it has been used in various forms, including incense and tobacco sweetening. Madge, the dog responsible for the discovery, is promised daily treats as a reward.

What are some uses of whale vomit mentioned in the text?

What promise was made to Madge after the discovery?