Get yourself a small pan and throw in the rhubarb, sugar and orange juice. Put a lid on top, bring to a boil for a couple of minutes, then remove the lid and simmer for a few more minutes until you get a thick compote consistency.
While the compote is stewing, we'll make some lovely crisp wafers. Sieve the icing sugar and cinnamon onto a clean work surface. Cut 4 slices about 1/2-inch thick off your pastry and place them flat on your dusted work surface. Pop the rest of your pastry in the fridge or freezer for another day. Roll each slice out to 1/4-inch thick, turning it over as you go so it gets covered in the icing sugar mixture. Cut the strips in half diagonally - you'll end up with long, triangular shapes.
Preheat a large, nonstick frying pan and fry the pastry triangles, in 2 batches, on each side until golden brown. Leave to cool on a rack.
Mix the yogurt, orange zest and honey together.
To serve, dollop a spoonful of yogurt into each serving glass, followed by a spoonful of rhubarb compote. Continue layering the yogurt and compote until the glass is full, then stick a puff pastry triangle in the top. Alternatively, layer up the yogurt, rhubarb and pastry triangles on individual plates. Now tuck in!
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Recipe Excerpted from JAMIE AT HOME by Jamie Oliver. Copyright (c) 2008. Published in the U.S. by Hyperion. All Rights Reserved. www.jamieoliver.com