Please choose the correct ending to complete the given sentence: Holidays and Traditions: [header] How to make chocolate mousse eggs [title] Break the chocolate into pieces. [step] Put these pieces into the saucepan. [title] Cut the butter into small chunks.

Ending1: [step] Add these chunks to the chocolate pieces. [title] Place the saucepan over gentle heat. Ending2: [step] As a safety precaution, you can break the chocolate into larger pieces, as well. [title] Put the egg yolks in a mixing bowl. Ending3: [step] Be careful not to let the butter melt. [title] Place the bowl into the saucepan with the eggs and add the milk. Ending4: [step] The denser the cooked chocolate, the bigger the amount that can be added to the batter. [title] Make sure you have a small cupcake pan.

Answer format: ending1/ending2/ending3/ending4