class Ingredient(models.Model):
    name = models.CharField(max_length=20,
                            blank=False,
                             null=False)

class IngredientHistory(models.Model):
    ingredient = models.ForeignKey(Ingredient,
                                   blank=False,
                                   null=False)
    product = models.ForeignKey('Product',
                                blank=False,
                                null=False)
    date = models.DateField(auto_now_add=True)
    quantity = models.PositiveIntegerField(blank=False, default=1)

class Product(models.Model):
    ingredients = models.ManyToManyField(Ingredient,
                                         through=IngredientHistory,
                                         through_fields=('product', 'ingredient'),
                                         related_name='products')

p = Product.objects.get(pk=1)
q = p.ingredients.all().values('id').annotate(max_date='ingredienthistory__date')
for i in q:
    ingredient = p.ingredients.all().filter(id=i.id, ingredienthistory__date=i.second)
    # do something with ingredient