Would be funny to sell dairy for bitcoins or any other crypto. This is somewhat phantasmagorical to assume but who knows what's next.
First, the cryptocurrency should be legalized by the states that should determine its official status, establish the order and conditions of its circulation in the state, state bodies should issue certain instructions to tax and other authorities, only after this should the infrastructure for using cryptocurrency be developed as a means of payment in addition, hardly ever bitcoin will pay for dairy products. Although this is not at all possible. Most likely, Bitcoin will be used mainly when making only large transactions.