Sainsbury’s expands product offerings with Sushi Gourmet and Patisserie Valerie partnerships   London, 2017-May-01 — /EPR Retail News/ — As part of its commitment to offer customers a distinct and differentiated choice of quality food, Sainsbury’s is trialling a new in-store partnership with luxury patisserie brand, Patisserie Valerie. Patisserie Valerie cakes now available at patisserie counters in…