Frozen Lemon Crunch

I'm posting this for a request. I haven't made it but it comes from an old NZ cookbook I use often and never have failures from!

• Ready In: 15 mins
• Yields: 1 lemon crunch

Ingredients

• 1  cup evaporated milk, chilled
• 1⁄3 cup lemon juice
• 2  eggs
• 1⁄2 cup sugar
• 1⁄4 teaspoon salt
• 1  tablespoon  grated lemon rind
• 1⁄2 cup  corn flakes (breakfast cereal)
• 3  tablespoons sugar
• 2  tablespoons  melted butter

Directions

1. Whip milk until stiff, add lemon juice, and whip until very stiff.
2. Beat eggs, 1/2 cup of sugar and salt together until thick and creamy.
3. Fold in whipped milk and grated rind.
4. Pour into icecream trays.
5. Mix cornflakes, 3 tablespoons sugar and butter.
6. Sprinkle over filling.
7. Freeze until firm.