Ordering specialty products by phone or in a typed email invites mistakes. A wine with the same name comes in several vintages and bottle sizes, a cheese in two ripening stages, an olive oil in three tins. Reading names off a handwritten note leaves the supplier to guess which one you meant.
The barcode on the product already identifies the exact item. If you capture that barcode with the quantity you want while standing at the shelf, nobody has to retype or interpret anything.
What you need is a list of barcode and order quantity that you can send straight from the shop floor, in a format your supplier can open.