Ravelry: Popcorn Beret pattern by Fiona Oliver Ravelry: Popcorn Beret pattern by Fiona Oliver Vintage Crochet Beret Pattern, Popcorn Stitch Vintage Crochet Beret Pattern, Popcorn Stitch. A hand knit beret in Merino wool, featuring an all over popcorn stitch, contrast hand crocheted trim, and pom pom top. Part of the Misha & Puff Apolina collaboration, these collections were imagined together sharing a color palette and thoughtfully designed styles that layer, mix, and complement one another effortlessly. The hand dyeing process of our yarn introduces beautiful variations and subtle nuances, making each garment truly unique.