Learn Dutch: Ik wil graag een lekker hammetje voor vanavond. - I would like a nice little ham for tonight.

The word ham is usually an uncountable mass noun, just like in English. By making it a diminutive (hammetje), it transforms into a countable noun representing a specific portion, like a small whole ham or a distinct cut meant for roasting, rather than just a vague amount of meat.

Why is the adjective written as lekker without an -e at the end? Isn't it de ham?

While the base noun is indeed de ham, all diminutives in Dutch are automatically het-words (het hammetje). When a het-word is preceded by the indefinite article een, the adjective drops its -e ending. Therefore, it has to be een lekker hammetje.

Could I use ik zou willen here to say 'I would like' instead of ik wil graag?

You could say ik zou graag willen, but ik wil graag (literally 'I want gladly') is the most natural and standard way to express 'I would like' politely in Dutch. It sounds perfectly friendly and is exactly what you would use at a butcher shop.

Why does the sentence use vanavond for 'tonight' instead of vannacht?