Not really conscious effort, we just make sure fruit and veg appear at regular intervals throughout the day so they get 6-8 a day with little effort.
For example, some days they have fruit juice and/or fresh fruit with breakfast - so that's 0-2 portions.
Fruit every day for break at school. Another portion of fruit in with lunch, sometimes some veg there too. So that's another 2-3 portions, so by lunchtime they will have had a minimum of 2 and a maximum of 5 portions with little thought or effort.
Tea - 2-3 portions veg with tea, one portion fruit for afters in some form, either fresh or cooked.
After-school snack - sometimes a home-made biscuit, but sometimes a portion of dried fruit with some nuts.
Supper - fruit as and when they want it. Youngest might have one piece, middle child 2-3 pieces during the course of the evening.
So, depending on the child's appetite and exactly what meals we've had, that would be anywhere from 6 to 10 portions. It would be a really unusual day that any child didn't have the 5, just because it's coming in small but regular quantities and it's just part of our routine.