Maybe not “reserved” but eaten less frequent? Let’s say a poor peasant during that time owned 10 guinea pigs and had the choice to either slaughter one of the little guys for one single meal, or sell some to the higher-ups and buy less expensive food that will last for a week or two, then it would make sense if the peasants ate less of them than nobility even if it wasn’t explicitly forbidden.
Maybe not “reserved” but eaten less frequent? Let’s say a poor peasant during that time owned 10 guinea pigs and had the choice to either slaughter one of the little guys for one single meal, or sell some to the higher-ups and buy less expensive food that will last for a week or two, then it would make sense if the peasants ate less of them than nobility even if it wasn’t explicitly forbidden.