Using a food cost calculator is not enough to improve your F&B cost control. To reduce food cost and increase profitability, you should implement best practices and strategies. You should set realistic and measurable goals for food cost percentage and gross profit margin, and communicate them to staff and stakeholders. You should also have a standard recipe, portion size, and presentation for each menu item, and train staff to follow them consistently. Additionally, you should monitor and audit food cost regularly, measure it daily, weekly, monthly, and yearly, compare it to sales and budget, and conduct periodic audits of stock and equipment. It's important to control and optimize purchasing and inventory management by planning purchasing needs based on menu, sales, seasonality, negotiating with suppliers for quality, price, delivery terms; storing inventory properly; and avoiding over-purchasing or running out of stock. Finally, minimize waste and theft by implementing a waste management system that tracks waste sources/causes; implementing a security system that prevents/detects theft/fraud; holding staff/suppliers accountable for misconduct.