Create a memory. Our brain sends signals in a particular pattern associated with the event we're experiencing and creates connections between our neurons, called synapses.
Consolidate that memory. It's the process of committing something to long-term memory so we can recall it later. Much of this process happens while we're sleeping as our brains recreate that same pattern of brain activity and strengthen the synapses created earlier.
Recall. Recalling a memory is easier if it has been strengthened over time.