Beat egg yolks with 4 tbsp sugar in a small sauce pan. When they are mixed well – add flour in it
In a separate sauce pan boil the milk, and then add it little by little in the egg yolk mixture and beat well
Put this mixture on stove and cook on medium heat for 2 – 3 minutes while stirring continuously to get it thick. Remove from heat and shift it to a bowl, add lemon juice, rind and icing sugar to it. Beat it all well.
In a separate clean and dry bowl, beat egg whites until stiff and add the sugar in it
Add egg whites mixture slowly in egg yolk mixture and mix well with a wooden spoon
Grease 3 – 4 ramekins with margarine or butter and sprinkle icing sugar on it
Fill ¾ of ramekin with the mixture (leave space to rise). Bake in a pre-heated oven for 15 – 20 minutes or slightly golden on top
Remove from oven and sprinkle icing sugar on it or make meringue by beating egg white with icing sugar. Spread on each soufflé bowl, put these bowls in hot oven and grill for 3 – 4 minutes