"A"ing coffee grounds from my Kollege

Today Mr Bear came back from his other office. Hadn't seen him in a while, so we had a lovely chat about our gardening efforts. He and Ms Bear are very into gardening in the office, and I started to move some plants there to stamp out the insect population in my home garten. 

I offered him some saltwater taffy which I got from my reddit snack exchange parcel, and he showed me this coffee grounds he got from Dr Cafe Coffee. He apparently went to two outlets and scored all their free coffee grounds. 

He told me that this was very useful for vegetables, because vegetables love slightly acidic soil. He also advised against dumping them on baby seedlings, because they would burn. He said that for himself, he likes to add a thick layer of coffee grounds for the bigger plants. 

Best of all, Mr Bear gave me the bag of coffee grounds. However he said I must use it within 7 days of him getting it from the shop, as advised on the packaging.

Coming home, I googled what edible plants flourish with acidic soil. According to gardeningweb, it seems that coffee grounds have a PH of 6.9 (almost neutral), because most of the acid is already boiled out of the ground coffee while brewing.

As a general guide, these are the vegetables and fruits that do well in acidic soil (even well down to pH 5.5):
Celery
Collards
Corn
Cucumbers
Eggplant
Endive
Kale
Onions
Parsley
Parsnips
Peppers
Potatoes
Pumpkins
Sweet potatoes
Turnips 

Tomatoes (more than PH 6) 

Strawberries

Blueberries

Limes (don't grow together with blueberries).