I found this recipe online then went shopping for the following ingredients:
12 eggs (brought to our home via FFTY)
1 cup heavy cream (Straus, in a bottle to turn back for deposit)
1 qt whole milk (Straus, in a bottle to turn back for deposit)
2 cups sugar (bought in bulk in a reusable cloth bag)
1 liter Bourbon (bought in a glass recyclable bottle)
1/2 cup dark rum (bought in a glass recyclable bottle)
3/4 cup brandy (bought in a glass recyclable bottle)
1 pinch salt (bought in bulk in a reusable cloth bag)
1 pinch mace (bought in bulk in a reusable cloth bag)
{Nearly 3 liters of eggnog ready to age for a month in the refrigerator}
Directions:
Separate egg whites from yolks, place yolks in a large bowl and save egg whites in an airtight container for another use. Cream together egg yolks and sugar with whisk until creamy. Then add and stir in cream, milk, bourbon, rum, brandy salt and mace. Mix with spoon and store in the refrigerator for 3 weeks to a year. I made ours tonight so it will be consumed exactly a month from now.
Serve over ice and garnish with sweetened fresh whipped cream and a shaving of nutmeg.
UPDATE: 1/17/2014
We had a holiday party and served the aged eggnog along with spiced cider and mulled wine. The eggnog was the star, everyone loved it. I ended up cutting it with about 1/4 parts milk because it was super strong. Aging it made it super smooth and creamy.