like the above post, I added 7# of fresh pureed strawberries to a 5g batch.
Nice aroma, strawberry taste (not enough for SWMBO), but nonetheless a good taste and it had a definite pink color to it.
I also noticed that it did not clear as well as previous batches, which after making some batches of cider, I now realize that it is most likely the pectins that caused the haze. I am not OCD with the clarity of a beer like that, as the taste is what I am after.
I let my strawberry puree sit in 4 cups of vodka for about 10 days, so there is NO chance that they would infect the beer.
You can also freeze it as mentioned above and that should kill all the microbes as well.