Ridiculously high SG.

[ZenGeek]

Just put on an extract porter that read 1100 when I measured it at around 28*C.

Checked my recipe on beercalculus and there is no way possible that it should be that high.

Is this a problem with my hydrometer? Is it even possible for the following ingredients to come out that high?

1.7kg Choc Mahogony Porter Extract (cascade brand)
1.5kg Raw Sugar (this may mean a different thing in the US)
250g 'Corn Syrup' powder (malto-dextrin)
250g(ish) chocolate malt - crushed and steeped


The kit yeast is a low attenuation yeast with a slow start, so I probably wont even knkow if it's going to start for a few days. I'd be very impressed if it can finish given the readings I've taken.

 

[beergolf]

Did you add top off water? If so then the water and the wort was not mixed all the way. It is nearly impossible to miss OG with extract unless water volumes are waaaaay off.

 

[badlee]

If you brewed a 23ltr batch, the highest i can see the sg being is about 1050.
Same question, did you top up with water or just brew a small batch with it mate?