Preheat the oven to 350°F. Grease a 6 or 7 inch round springform pan.
Crack the eggs into the mixing bowl, then whip on high speed for seven to ten minutes. You are done when the eggs are triple in volume, are stiff, and have a pale-yellow color.
Melt the chocolate chips with the butter together in the microwave. Heat at 30 second intervals, stirring in between to avoid burning, until the chocolate melts and the mixture forms a smooth paste. If you prefer to do it old school, melt the chocolate and butter in a double boiler stirring frequently.
Add the whipped eggs from the first step into the chocolate mixture slowly, adding small portions at a time. Stir by hand with a large spatula after you add each portion until no egg streaks remain.
When ready, pour batter into pan and bake for 40-50 minutes in your preheated oven until the top is puffy and cracked. Remove your cake from oven and let it cool.
Remove the cake from the springform pan, cool and enjoy!
Optional: Decorate the top with strawberries and/or powdered sugar if desired. This cake goes really well with vanilla ice cream!