Abstract: A sample of lard or fat is taken from a carcass of a pig or part thereof and heated until the fat is liquid, whereupon the sample is extracted by a polar solvent, and the contents of the indole compounds associated with boar taint in the extract are determined. A sample container useable when carrying out the method includes a container divided into an open first chamber and a closed second chamber, where the two chambers are separated from each other by a partition wall breakable by a slight physical load. A closing device associated with the open container includes a third chamber provided at the top with an area penetrable by an injection needle and at the bottom includes a filter which may be lowered into the container. The method is simple and economically advantageous, especially for use in relatively small slaughterhouses.