Nocello is a walnut and hazelnut-flavoured liqueur from Italy produced by the Toschi Vignola; its packaging is made all the more distinctive by the walnut...
That the green walnuts must be gathered on Midsummers Day is not a superstition. Rather, that's when green walnuts are sufficiently mature to harvest while the shell inside is still being soft enough to quarter. That said, I've harvested green walnuts on June 28th and they were still soft enough to slice through without any trouble.
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