boil down, boil down to

자료: Collins Cobuild

[1] boil down

• PHRASAL VERB: When you boil down a liquid or food, or when it boils down, it is boiled until there is less of it because some of the water in it has changed into steam or vapour.
• He boils down red wine and uses what's left.
• = reduce   

[2] boil down to

• PHRASAL VERB: If you say that a situation or problem boils down to a particular thing or can be boiled down to a particular thing, you mean that this is the most important or the most basic aspect of it.
• What they want boils down to just one thing. It is land.
• = amount to