 At Lent, owners of livestock were even warned to keep an eye out for hungry dogs frustrated by a "hard siege by Lent and fish bones".The trend from the 13th century onward was toward a more legalistic interpretation of fasting.Nobles were careful not to eat meat on fast days, but still dined in style; fish replaced meat, often as imitation hams and bacon; almond milk replaced animal milk as an expensive non-dairy alternative; faux eggs made from almond milk were cooked in blown-out eggshells, flavoured and coloured with exclusive spices.