concentrated pressure canner wort as pseudo-LME?

[domdom]

i've started pressure canning wort for starters. 2 batches so far have worked well. i usually do about 1 oz DME per 1 cup of water, which brings the gravity to around 1.040-1.044. i got to thinking if it would possibly work to triple or even quadruple the amount of DME to make a high gravity quart of wort (ha!) that i can use to help increase the gravity of a brew, the same way you would use LME.

i use a grainfather and have used LME a couple times for high gravity brews but thought this option might be slightly more diy.

i figure i would need to adjust the water volume to substitute some of the water used, either mash or sparge. would this cause any issues with PH or tanins or anything else?

 

[domdom]

....and just realized the obvious answer would be to just add the DME to the boil to raise my gravity. doh! i guess this is more of a hypothetical 'can it be done?' also hate how clumpy DME gets.