Like the previous answer, adequate meal preparation and use of products from sustainable agriculture will reduce both wastage and the associated carbon footprints,
Initiatives like public fridges not only reduce waste but help feed the needy and every neighbourhood should invest in one collectively. This is an article about the same in my city: https://timesofindia.indiatimes.com/city/bengaluru/bengalurus-community-fridges-feed-the-hungry/articleshow/65220822.cms
Since food waste is generated by the individual/family/household, the only way to reduce is it at that same grass-root level. Food bank, Community fridges, common kitchens etc can serve as the drop and pick up points for excess food so it can be utilised by the needy and wastage is reduced. The only issue would be motivating people to take the effort to donate their surplus food, because simply disposing of it would be the easier option. Incentive is the best motivator so might have to think along those lines.
Good idea by Ashwath Ramji , This could even open up opportunities for job creation. Implementation can be managed and administered by local councils or NGOs as mentionned by another researcher earlier.
Difo Voukang Harouna - Yes indeed Sir, it is a wonderful initiative! Some grocery stores and supermarkets are also doing the same. It is a small effort but saves many from going hungry and good food from going to waste.
Dear Ashwath Ramji , I love the initiative and I am planing to run may be not in an immediate future, a small humanitatarian organisation here in Africa that should do the same because you know here the challenge of food security is high.
May be we can join sands and draft a proposal to source funding for this project. Please, you seem to have much experience in this; could you send me more details please to help me draft the proposal and we collaborate on the project?