Shef, the US-based homemade food marketplace that enables cooks to sell meals in their local communities, announced it has raised $8.8 million in seed funding from investors including Y Combinator, Craft Ventures, and M13, as well as founders and executives from Instacart, TaskRabbit, StubHub, AngelList, Lyft, Airbnb, and Yelp. Founded in 2018 by Alvin Salehi…