Why can't the roast duck in the hotel buy this taste in the market?

Reasons for opening a business, reasons for selling.

1, exercise reason, the roast duck in the hotel is made by the professional chef of the hotel, which is different from the roast duck in the market and can't be bought.

2. Reasons for sale: The hotel roast duck is only sold to hotel customers, not in the market, so the hotel roast duck can't buy this taste in the market.