Step 1: Before using your board, the wood needs to be treated and preserved. I bought a food safe mineral oil made specifically for butcher blocks, for around $8.00 at my local home improvement store. It is a little pricey, but you use such a small amount, that the oil will last a long time. The oil should be odorless, tasteless, and colorless, so as to not compete with the food you will be preparing on the board. I followed the directions on the bottle to apply 3 thin coats of oil with a soft rag, waiting at least 20 minutes in between each application.
Step 3: The board is ready to use. To clean the board, hand wash with hot soapy water. You can also use half a lemon, sprinkled with salt as a scouring pad to remove stains. Every year, apply another coat of oil to maintain the board.