Seven feet from the net on each side, there is a box. You cannot hit the ball out of the air while standing in it. That is the entire rule. It has a formal name, the non-volley zone, but everyone calls it the kitchen. And it is the reason pickleball works.
Without the kitchen, the sport would be broken. Tall players would camp at the net and smash everything. Rallies would last two shots. The game would reward reach and power and nothing else. The kitchen forces everyone back, slows the game down at the net, and creates the dink battle that defines high level pickleball.
Here is exactly what the rule says. You cannot volley, meaning hit the ball before it bounces, while any part of your body is touching the kitchen, including the line. You can stand in the kitchen all day. You can hit groundstrokes from the kitchen after the ball bounces. What you cannot do is take the ball out of the air from inside the zone. Step in, let it bounce, hit it, fine. Reach in from outside and volley, fine, as long as your feet are clear.
The momentum rule catches people. If you volley from outside the kitchen but your momentum carries you into it afterward, that is a fault. The classic version: you smash a high ball near the net, your follow through steps you into the kitchen, point lost. It feels unfair the first time it happens to you. It is the rule working exactly as designed.
Why seven feet? Nobody knows for sure. The original court was a badminton court, and the inventors drew the lines where they seemed right. The distance stuck. It is far enough that you cannot easily reach over it to smash, close enough that dinks drop softly into it. The whole tactical game lives in those fourteen feet of combined kitchen.
The dink is the shot the kitchen created. A soft arcing shot that lands in the opponent's kitchen, too low to attack, forcing them to hit up. Good players can trade dinks for twenty shots, each one probing for a ball that sits up just enough to speed up. It looks like nothing is happening. Everything is happening.
Beginner advice: respect the kitchen early. New players either forget it exists and fault constantly, or fear it and never go near the net. The right instinct is to get to the kitchen line as fast as you can and stay there. Most points are won from the kitchen line, not the baseline.
Next in the Primer: what paddle should a beginner buy, without the marketing nonsense.