Kitchen cleanliness

"One should never eat within the kitchen, there is ample place to eat so why should one eat in the kitchen? Kitchen should be considered as good as the Lord's room, and nobody should wear shoes in the kitchen, smelling and tasting of foods being prepared for the Lord should never be done, talking within the kitchen should be only what is necessary for preparing the prasadam, or about the Lord, and dirty dishes (those taken from kitchen and eaten from) should not be brought back into the kitchen (but if there is no other place to wash them, then they should be put into sink and washed immediately.), hands should always be washed when preparing prasadam, and in this way, everything shall be prepared very cleanly and pure.)"

Srila Prabhupada Letter to Aniruddha, 06-16-68