This modest, footed grape leaf dish is an example of eighteenth century salt glaze tableware.  While the potter remains unknown, these are generally assumed to be of  Staffordshire origin. 

Traditionally called a pickle dish, these would have been used to serve the preserved or candied fruits which were part of the dessert course of a meal.  These relatively flat, leaf shape dishes were made in a number of variations with relief-molded designs generally focused on themes from nature, such as shells or foliage. In this example, an additional flowering plant is depicted over the molded  leaf detail. The piece is finished with three petal-form molded feet and, continuing the adherence to nature, a  grape vine twig for the handle.

The eighteenth century tablescape was in many ways more imaginative than today's. The variety of shapes and details that could be achieved in fine stonewares greatly contributed to mealtime whimsy. 

Janine E. Skerry and Suzanne Findlen Hood in their authoritative  Salt-Glazed Stoneware In Early America devote a chapter ("Some of the Finer Kinds: English White Stoneware , Part II,"p. 134-167) to these wares.  They include discussion and an illustration of leaf dishes including one almost identical to this example (pp. 147,148, Figure 14).