Goubaud’s pique-nique in La revue de la mode is an advertisement for picnic ware for upscale readers.
As usual for picnics, this is a rural setting in an open forest. A country town can be seen deep in the background, as well as a chauffeur-driven electric Mercedes equipped with a picnic hamper and pannier de voyage. The appeal here is to the gentry and people of means who own cars and have the leisure to entertain casually with exquisite and expensive picnic ware: plates, silverware, and thermos serving dishes. Hot coffee or tea will presumably be served from a thermos carafe and sipped from dainty China cups.
See La Revue de la mode (1898). The illustration was found in the picnic folder at the NYPL, and I’ve yet to see another source.