Whisky Fudge Cake

• 16 eggs (separated)
• 1 1/4 kg chocolate in (plain cut)
• 1 1/4 whisky warmed (slightly)
• 1,000 gr caster sugar
• 650 gr flour (plain)
• 425 gr butter at (unsalted room temp)
• 18 gr baking powder
• 18 gr vanilla extract