Hampton Creek never publicly admitted its numbers were wrong. It scrubbed its site of sustainability claims, and the Cookie Calculator vanished. Such quiet backpedaling might be forgivable at many young companies—overeager math isn’t unheard of in Silicon Valley. But at Hampton Creek, it fits a pattern of mistaken or exaggerated claims that may prove to be deliberately deceptive. ... the company deployed a national network of contractors to secretly buy back Just Mayo from grocery store shelves. ... Tetrick used supermarket sales figures much as he used the environmental claims—to raise venture capital ... His pitch: He would liberate billions of hens from the fetid misery of overstuffed cages—and in the process save water and grain and cut carbon pollution. Profane, charismatic, and built like the linebacker he once was, Tetrick became a tenacious evangelist for eliminating animal protein from the world’s diet. ... Tetrick contends that the mayo buyback program was primarily for quality-control purposes and cost just $77,000. ... A former accounting employee who worked with the company’s profit and loss statements says costs for the buybacks were included in several expense categories on the P&L, including one line item called “Inventory Consumed for Samples and Internal Testing.” As buybacks surged in 2014, Hampton Creek expensed about $1.4 million under this unusual category over five months, compared with $1.9 million of net sales in the period.