reminiscing

/R EH0 M AH0 N IH1 S IH0 NG/
verb
  1. 1

    To recall the past in a private moment, often fondly or nostalgically.

  2. 2

    To talk or write about memories of the past, especially pleasant memories.

  3. 3

    To remember fondly; to reminisce about.

noun
  1. 1

    Reminiscence

    โ€œthe reminiscings of an old farmerโ€

Source: https://en.wiktionary.org/wiki/reminisce, https://en.wiktionary.org/wiki/reminiscing