Provisioning means food, liquid, and everything to stay fed and healthy while on board. One thing to remember when provisioning is: 'if you don't like it while on land-you won't like it at sea'. So, when shopping for meals, snacks etc. be sure to include all the favorites, the fast and easy to make, and the special treats too. Nothing is worse than being on board hungry and everything is food you would never consider eating while on land. Passagemaking food is a little trickier because we never know when the seas or the wind make it too rough to cook. I've learned to plan three days of grab and go foods as well as meals that taste good either hot or cold.
One thing we do while at sea that we never seem to do at home is stock up on fresh foods. We look for the local fruits and vegetables. We clean them and then hang them in our hammocks to help them last longer.
We don't have a freezer so we ask the local restaurant (sometimes it's a butcher) to put our packaged meat in their deep freeze until the day before we leave. The frozen meat stays frozen sometimes up to a week in our refrigerator.
Potatoes and apples last the longest, close to three months. Bananas, avocados and fresh vegetables don't last more than a week.
We don't have a water maker. Our water tank holds 80 gallons. It is potable but doesn't taste good. We use it for showers etc. We calculate 6 liters of drinking liquid a day for the two of us and that's how I buy enough water for a month.
Once it is all bought, it has to be stowed and accessible for the passage. That's the fun part. As you can see from the pictures it all works out even on a small boat.