[{"item":"Ground Meat","type":"junk","ingredients":{"cheese":"120g","meat":"70g"}},{"item":"Chicken","type":"junk","ingredients":{"cheese":"100g","meat":"60g"}},{"item":"Burger","type":"junk","ingredients":{"cheese":"120g","meat":"50g"}},{"item":"Green Spanich","type":"healty","ingredients":{"Spinach":"12g","Leaves":"1.5g",}},{"item":"Pumpkin Salad","type":"healty","ingredients":{"Spinach":"18g","Leaves":"1.2g",}}]

db.collection.aggregate([{$group:{"_id":"$type","ingredients":{$push:"$$ROOT"},"doc_count":{$sum:1}}}])