Tuna & Cucumber Sandwich

wheat flour 51.9% , tuna 16.1% , water 15.5% , cucumber 16.0% , Oatmeal 3.3% , rapeseed oil 2.4% , wheat bran 1.8% , corn flour 1.4% , spirit vinegar 1.1% , sugar 0.9% , salt 0.7% , egg 0.6% , yeast 0.5% , wheat gluten 0.5% , E471 0.4% , E472e 0.3% , pasteurised egg yolk 0.3% , concentrated lemon juice 0.3% , barley malt flour 0.2% , white pepper 0.2% , brown mustard seed 0.2% , E300 0.1% , palm oil 0.1%