GardenersCardiff answers:

While commercial mushroom farms raise and package large quantities of mushrooms for consumers, packaged mushroom gardens give individual gardeners the opportunity to raise a small, indoor mushroom crop. These mushroom-growing kits include everything you need to start your own small mushroom garden. Although you can purchase one of these ready-made kits from Internet suppliers and gardening centers, you can also put together the necessary ingredients to make your own mushroom-growing kit. Use this for your own gardening hobby or present this homemade kit as a gift for a friend.

Things You’ll Need:

Container
Compost
Potting soil
Peat
2 Envelopes
Wooden spoon
Mushrooms
Knife
Paper
Plastic wrap
Spray bottle
Water

Putting Together Your Kit

1 Obtain a broad, shallow container or recycle a used one for this purpose. A large casserole dish or a plastic storage bin works well for building a mushroom garden.

2 Mix equal amounts of sterile compost, potting soil and peat, filling your container with a 2-to-3-inch layer of this rich medium. Reserve about 1/4 cup of this mixture in a sealed envelope. Smooth the top of your soil mix with a large, wooden spoon, removing any ridges or dips, creating a uniform surface.

3 Gather mushroom spores for your garden kit. Known as spore printing, collecting spores allows you to propagate new mushrooms from harvested species. Purchase only fresh mushrooms from your grocery store to use for this purpose. Cut off the stems and place your mushroom caps, gills down, on a piece of clean, white paper. Wait 12 hours for the mushrooms to release the majority of the miniscule spores. Carefully transfer the spores to a sealable envelope for storage. Keep these cool and dry.

4 Tear off a sheet or two of clear plastic wrap to place over the top of your container. Poke several holes in the plastic wrap to allow adequate airflow. Complete your mushroom garden kit with a plastic spray bottle for misting the soil. Your kit is now ready for planting or giving away as a gift. Include growing instructions with a gift.

Planting and Growing Your Mushrooms

1 Plant your mushroom garden by misting the surface of your soil with a fine spray of water until it glistens. Scatter your tiny spores over the surface of the damp soil. Sprinkle the reserved 1/4 cup of medium over the top of your spores, barely covering them with this fine substance. Spray the surface again to create even dampness and place your plastic wrap over the top of your container.

2 Put your planted mushroom garden in a dimly lit area, such as a closet or storage cabinet. Maintain the temperature in your closet near 75 degrees Fahrenheit. Keep the soil slightly damp to the touch by spraying it every few days.

3
Look for the small mushrooms to appear within one to two weeks. Begin harvesting them as they reach maturity to allow space for new ones to grow. Mushroom gardens often continue supplying fresh produce for six to eight weeks.

GardenersCardiff answers:

Anything that YOU have to cook that has not been processed.
All fresh fruits and veggies
All fresh meats
Certain cheeses have natural enzymes that will also trigger headaches.
So will caffeine containing products like coffee, tea, chocolate and certain headache medicine(Extra Strength Excedrin has caffeine; thats the item that makes it work fast)
Stuff like Cheeze Whiz, Canned meals(think stew, canned soups, Chef Boy R Dee), cold cuts, premade salads, gravy packets, sausages.
Preservatives are only in food that has been…preserved. That means that anything fresh is good.

FYI: canned veggies only have salt as a preservative…read the can.
The other gal is right, many things can trigger migraine headaches including things that are fresh.