How do we get the lumps out of homemade baby food?

My wife and I are trying to make our own food for our 6-month-old daughter. How do we get all of the little lumps out? Some things, such as carrots, are still lumpy after mashing, etc.

Bake or steam foods first. Use as little water as possible when boiling or steaming foods to retain the nutrients. Most cooked foods can be mashed finely enough with a fork or large spoon. A liquidiser, food processor or whisk may puree the foods a little more finely. If the lumps remaining are very small and soft, your daughter will probably be fine.