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Perfect Day

Precision-fermented whey protein

Ranked #2 in Best Alternative Protein Startups.

Perfect Day, founded in California in 2014, makes animal-free whey protein (beta-lactoglobulin) by precision fermentation and sells it as an ingredient to food and drink brands. It has raised more than $825 million, according to AgFunderNews.

Official website

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At a glance

Price fromCustom
Best forFood brands sourcing animal-free dairy protein

From Perfect Day's own website.

What stands out

  • Sells to food brands at ingredient scale
  • Large funding base

Worth knowing

  • New plant still ramping up
  • Ingredient supplier, not a consumer brand

How it ranks

Perfect Day is ranked 2nd of 10 in Best Alternative Protein Startups (Lister Score 95.6).

#2 in Best Alternative Protein Startups · Lister Score 95.6

Perfect Day's plant in Gujarat, India, a joint venture with Zydus Lifesciences, was set to begin operations in the second half of 2026..

RankBest Alternative Protein StartupsScore
1Impossible Foods96.8
2Perfect Day95.6
3The EVERY Company94.3
4Upside Foods93.1
5Wildtype91.8
6Formo90.5
7Mission Barns89.2
8Vow87.9
9Planted86.5
10Onego Bio85.2

Frequently asked questions

How does Perfect Day rank on Lister?

Perfect Day is ranked 2nd of 10 in Best Alternative Protein Startups (Lister Score 95.6).

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#2 in Best Alternative Protein Startups
RANKED #2 ON LISTERBest Alternative Protein Startups