Easy peasy. No bread. No Coca Cola/fernet. No beer. No alcohol. No fruit juices. No sweet fruits like Oranges, Uva, Pineapple. No postres. No helados.
Only small portion of meat - beef or lamb or organic chicken, some rice, and lots of rucùla and Palta or remolacha etc. only once a day. 1 hour of walking daily.
do this for few months.. you will drop those kilos. I promise you.