Barretta con grano saraceno al mirtillo

preparato di frutta a base di mirtilli 35.0% , buckwheat flour 16.0% , rice flour 8.3% , palm oil 5.0% , cane sugar 3.4% , corn starch 2.4% , sciroppo di glucosio-fruttosio da mais 1.8% , egg yolk 1.4% , apple fiber 1.1% , E336i 0.9% , E500 0.8% , salt 0.6% , natural flavouring 0.5% , E412 0.4%