Read the text below carefully.

picture: tastelikehome.com

Summer is coming! Welcome the summer with delicious and refreshing fruit salad.

Ingredients (You can adjust the composition of the fruits, these are just for example):

1. Eight purple grapes.
2. Eight green grapes.
3. Four strawberries.
4. One apple.
5. 1/5 of melon.
6. 1 mango.
7. 1/4 glass of mayonnaise.
8. 1/2 glass of yogurt.
9. 1/3 glass of sweetened condensed milk.

How to make:

1. Cut the grapes and into two pieces, then throw away the seeds.
2. Cut the strawberries into four pieces.
3. Cut the apple into four to take away the seeds, then cut them into a smaller size. Do the same with the melon and mango.
4. Put all of the fruits in a big bowl.

Now we'll make the sauce:

1. Pour the mayonnaise, yogurt, and the milk together in a bowl. Stir well and taste it. If you want to make the salad sweet, you can add the milk. If you want the salad to be more sour and fresh, you may add the yogurt.
2. After you get the desired taste of the sauce, pour it to the fruits and mix them well.

You may keep the salad in the refrigerator for a while to make it cold, or you can eat it right now.

The sentence 'You can adjust the composition of the fruits, these are just for example.' (line 2) means that ....