In the work bowl of a food processor, combine cream cheese, salmon, pickled ginger, lemon zest, and pepper, pulsing until combined and smooth. Transfer mixture to an airtight container, and refrigerate until very cold, 6 to 8 hours.
Using a vegetable peeler, scrape cucumber vertically, creating alternating stripes. Trim and discard ends from cucumber. Cut cucumber into 1-inch sections, making sure cuts are straight so cucumber sections sit level. Turn each section onto a cut side, and place on work surface.
Using a melon baller, scoop a shallow cavity in cucumber sections, discarding center pulp.
Transfer cold salmon mixture to a piping bag fitted with large open star tip (Wilton #1M). Pipe mixture into cavity of each cucumber section. Top each canapé with a pickled ginger flower.
Serve immediately.
Notes
* Beginning on a short end, roll each slice of pickled sushi ginger into a flower shape.
Recipe by TeaTime Magazine at https://teatimemagazine.com/smoked-salmon-cucumber-canapes-recipe/