Concatenate cells but with spaces between data

[eva.l2g]

Is there a way to put spaces between the data you are trying to concatenate? I've merged 3 cells into one with a concatenate formula but there's no spaces in between the data. For example:
A1 has Half & Half
B1 has 4
C1 has 96 oz

When I concatenate it the results are Half & Half496 oz. I would like spaces between Half and 4 as well as between 4 and 96 oz.

 

[Wookie]

=a1&" "&a2&" "&a3

 

[a massive zebra]

=a1&" "&b1&" "&c1

 

[eva.l2g]

That's perfect! Thank you!