Russula integra
... that the mushroom Russula integra is a popular food in Northern Europe?
...  that the <a href="./Mushroom" id="mwBYc" rel="mw:WikiLink" title="Mushroom">mushroom</a> <i id="mwBYg"><b id="mwBYk"><a href="./Russula_integra" id="mwBYo" rel="mw:WikiLink" title="Russula integra">Russula integra</a></b></i>  is a popular food in <a href="./Northern_Europe" id="mwBYs" rel="mw:WikiLink" title="Northern Europe">Northern Europe</a>?