Container and method for heat treatment of foodstuffs

A container for heat treatment of foodstuff in a liquid in a pot comprising:

• a non-deformable cup (10) with a base and cup wall (24), wherein the cup wall (24) comprises:
• through-going holes (70) for free flow of liquid into and out of the inner volume of the cup (10);
• and
• at least one first set of marks identified as A1, A2, A3, and A4 and at least one second set of marks identified as B1, B2, B3, and B4;
• where
• the at least one first set of marks is disposed on a lower part of the cup wall (24) to indicate levels for predetermined volumes of a foodstuff in the cup (10),
• the at least one second set of marks is disposed above the at least one first set of marks, wherein each of the at least one second set of marks B1, B2, B3, and B4 indicates an in-cup level of added liquid required for the heat treatment of the volume of the foodstuff indicated by each of the at least one first set of marks A1, A2, A3, and A4, respectively, wherein
• ratios of the volumes of the foodstuff represented by the at least one first set of marks to volumes of the liquid represented by the at least one second set of marks, defined respectively as A1/B1, A2/B2, A3/B3, and A4/B4, are predetermined based on the type of foodstuff that is to be heat-treated.