Sometimes, it is used in a generic sense for any potatoes destined for human consumption in potato form, as opposed to seed potatoes or potatoes that are primarily valued for the amount of starch that can be extracted from them for industrial processing.
In the following quote, Ware is used in this generic sense.
“In 1990, Dutch potato production totaled seven million tons. This total consisted of 3.5 million tons of ware potatoes, 1 million tons of seed potatoes, and 2.5 million tons of starch potatoes. Seventy percent of all seed potatoes are exported. Of the ware potatoes, two thirds are exported – either as fresh potatoes or as potato products (frozen French fries, potato chips, etc.)” W.Jos Bijman. The Development and Introduction of Genetically Modified Potatoes in the Netherlands. Agricultural Economics Research Institute. The Hague, Netherlands, 1999.
Other times, especially when used as a translation of French agricultural terms, it is used in a more specific sense to mean “Floury Potatoes.”
“Early Quality Ware Potatoes” means potatoes that are suitable for early harvesting by the farmers. Harvested at this stage, such potatoes will be Waxy Potatoes, even if they would have developed into Floury Potatoes after a longer growing time in the ground.