A self-described "hack" journalist named Stones is hired to document the day-to-day activities of the group involving their process of "sonic catering" (where they extract disturbing ASMR made by the sounds from various foods) while dealing with unpleasant gastrointestinal disorders, for which tests are being administered by an on-site doctor.

[16] Pat Brown of Slant Magazine awarded the film two and a half stars out of four and wrote, "That being said, Strickland's playful mockery of performance art and excessively serious-minded "collectives" feels both insular and, at times, a shade too flavorless.

"[18] Matthew Joseph Jenner of the International Cinephile Society awarded the film four and a half out of five stars, writing "Flux Gourmet is an absolute triumph, best enjoyed by those who accept that Strickland's work is undeniably an acquired taste, but one that offers a truly unforgettable experience, one that may even tempt us to go back for a second serving.

"[20] Leslie Felperin of The Hollywood Reporter gave the film a positive review and wrote, "Nevertheless, Strickland builds his own worlds with such a distinctive style — down to the fonts, the bilious shades of green and the textures of the silks — that the viewer can't help feeling pulled into his crazy maelstrom of quirk.

"[22] Anna Smith of Deadline Hollywood gave the film a positive review and wrote, "Strickland has delivered another delicious character-driven drama that balances the amusingly surreal with the uncomfortably real — and it's a wild and witty ride.