There are bigger farmer's markets, but on a Sunday, the farmers market on 5th Avenue near 4th Street in Park Slope is the right mix lazy and happening. It's the equivalent of a block and a half and is bringing on new vendors round out the produce, bakery and pickle stands Amazing Real Live Food Co., Raaka Chocolate, GoGo's Skordalia, and the unrelated  Go-Go Pops. With standby brunch options, Belleville and S'nice nearby plus a half dozen new restaurants, most with gardens, this is a laid-back brunch then market option for Sundays. If it's a full-blown food spectacle you are after, get to Smorgasburg on Saturdays.