Portmeirion botanic blue cake slice the botanic blue collection by portmeirion has a charming antique style reminiscent of a french antique toile fabric with soft blue floral motifs set against a fresh white background featuring a delicate spot background and delightful scalloped edges botanic blue makes a truly perfect gift use to serve cakes at afternoon tea this botanic blue cake slice is just beautiful microwave safe dishwasher safe perfect for casual dining dinner parties and en