Pai Lemon Tanpa Panggang

Bahan-bahan (8 porsi)

• 12 g raham crackers (about 1 ½ cups graham cracker crumbs)
• 1/3 cup granulated sugar
• 1/2 cup salted butter (melted)
• 1 (3-ounce) package lemon jello
• 2/3 cup boiling water
• 1/2 cup cold water
• 1/2 cup ice cubes
• 8 ounces whipped topping
• 1/3 cup lemon juice, (freshly squeezed)
• 3 teaspoons lemon zest