"Grout" for patios

[PerranOak]

So, I have a patio that has "grout" evidently composed of cement and sand. I guess the previous people used a dry mix fill the gaps. It's pretty good but in a few places needs to be topped-up.
The problem is I don't want a 25Kg bag of cement and one of sand hanging around for the next twenty years when I need, probably, about 200g of each!
Any ideas?
Cheers.

 

[aveatry]

You can buy "handi" packs of 12kg Portland cement. Then buy a bag of sharp sand and normal sand as its best to mix it yourself as ready mixed stuff or patch repair in a tub will not be good enough,