Kue Puding Lemon untuk Dua Orang

Bahan-bahan (2 porsi)

• 1 large egg ($0.22)
• pinch salt ($0.01)
• 2 tsp butter ($0.07)
• 2 Tbsp flour ($0.02)
• 1/4 cup sugar ($0.04)
• 1 medium lemon ($0.69)
• 1/3 cup milk ($0.08)