So all of us faced the problem of missing some ingredient. Almos alwasy it`s some fruit or herb. And limited stock in shops aren`t helpfull
So I`ll show you the way to buy as many items from shop as you want, no matter how many is in stock
There is my vid to show the process. You'll need a gamepad and shop that have item you want to buy. In my example it`s egs.

• Add 4 items in the cart, except one you want to buy;
  
• Add item you want to by 5th in the cart;
  
• Focus this item and press 'Select' button on gamepad (Y for Xbox or △ for PS) to remove item from cart;
  
• Item is removed from cart but game thinks that it still in focus;
  
• Repeatedly press 'Select' button on gamepad. Note that now amount of items in stock is increasing!
  
• Stop whenewer you want. Then just add item back to cart and buy it!
  
• *other items can be removed from cart if not needet