Jessica Koslow of SQIRL has a way with berries. She captures the best in lesser-known varieties, teasing the winey flavors of ollalieberries into a jam that’s deep and rich and bringing out a surprisingly bright and herbal side of boysenberries sourced from a one-acre plot in Redlands, CA. The vibrant boysenberry jam was our all-time favorite…perhaps our favorite berry jam ever…until we tasted the rare Youngberry version, which tastes like a dream where blackberries and blueberries merge into one incredible fruit. -Serious Eats