On possible substitute is coffee syrup, though the sugar will need to be reduced in the recipe. Coffee syrup however is mainly a regional product with more than 95% of it being produced and consumed in Rhode Island, USA.
Otherwise there is little which can replace instant coffee without changing the taste.
The coffee granules dissolve in the hot water and make 'instant coffee'.
If they're coffee bean granules, then no. Only granules of instant coffee will dissolve in water.
You could always put the granules in water....
If you are referring to instant coffee granules or ground coffee beans, then yes, it does dissolve in warm water.
Instant coffee granules dissolve faster in hot water than in cold water.
The biggest and I hope most obvious is not to use regular coffee grounds in place of instant coffee crystals. That being said you can brew a very strong pot of coffee and use 1/2 cup for every 1 tsp of instant the recipe calls for. Reduce the amount of liquids in the rest of the recipe.
SHUT UP FREAKS and DONT ASK QUESTIONS THATS DUMB
Granulated coffee is just coffee that is available in the instant (a little bit larger then powder) like form. This removes the need to grind it up and makes it a faster alternative during the day.
There are two main ways of producing instant coffee - freeze drying and spray drying. In freeze-drying, brewed coffee is frozen into granules, which are then placed in vacuum chamber, where the water sublimates (evaporates w/o liquifaction). In spray-drying, brewed coffee is sprayed in tower and dried by hot air in the matter of seconds. Freeze dried instant coffee advantage: higher quality product, better preserved flavor. Spray dried instant coffee advantages: faster and cheaper.
When you put coffee granules it hot water they will help them dissolve so it will be slightly like melting, also stirring helps the coffee granules melt. The hot water make the coffee granules turn into a liquid. OK, now you know, go and drink your coffee.
Nescafe is soluble coffee, introduced in Swithzerland in April 1930. The first NESCAFÉ was a powder produced by spray drying. It is still spray dried today but is processed further into granules.
Instant coffee is soluble in water.