NEW YORK — An “innovation playground” is how the team at plant-based snack maker Redd, Inc. describes a recently launched concept to quickly test and refine new products. Dubbed Redd Lab, the online platform engages and empowers the brand’s core consumers while delivering valuable insights that may guide reformulation and commercialization efforts, said Emma Fuerst Frelinghuysen, chief executive officer at Redd, Inc. “It’s kind of a combination of art and science, but what we’ve talked about internally is about three to five rounds of incubation . . .