1" mole" of any substance consists of 6.022xx10^23 individual items of that substance. It has the property that 6.022xx10^23 individual ""^12C atoms have a mass of 12.00g precisely. The mole is thus the link between the micro world of atoms and molecules to the macro world of grams and litres.
You specified a mole of eggs. There are thus 6.022xx10^23 eggses. How many dozen eggs is this quantity?