to assume that half a can of tuna is sufficient for a sandwich??

[Heymacarena]

DSS has been round for lunch four times this week and making himself a sandwich.

WIBU to request that he uses only a half can of tuna for his sandwich??

Personally j would struggle to chow through a sandwich made with 140g of tuna.

It's over £1 per can.

And oneup - it isn't any different. You sound mean too. Hiding food from your own children so you can have it?! Ffs. By the way, this is nutritional food I'm talking about. Different matter if you're hiding a junk food treat away to enjoy alone, but if you both want tuna, say, why would you have it and not let your child have any? Where on earth do some people get their family values from, that they would do that?

OK so this isn't about the cost, you choose to be frugal.
His mother would not appear to have that choice if the boy is on FSM.

l tell DS what he can and can't eat. He is isn't allowed to help himself without checking with me first. I find this a bit odd in a family home, that he can't just get food when he wants, as if your DS is a visitor in his own home.

If it's genuinely a stock control thing then I have two suggestions

1. I have a shopping list in the kitchen. Anyone who finishes a jar or uses the last of something writes it on the list.
2. Bulk buy. Often cheaper and much less risk of being temporarily tunaless.

Is your husband aware that you begrudge his son ( who is being raised in poverty) a tin if tuna that you can afford ?

Your second post does you no favours OP. You resent the boy and his needs, resent the maintenance paid to his DM, and you control what every one in the house eats. Jesus wept you sound awful.

The way it works at Ds school, they credit the cashless card with 2 pounds a day for FSM so you can use up your whole lunch allowance by eating a bacon sarnie at breakfast or break. So the boy may actually be eating both FSM and Tuna sarnies. Not a problem, assuming he's growing and not overweight.

However, I would say a whole tin of tuna in 2 slices of bread is a bit "greedy" whereas a tinfull in 4 or even 6 slices is fine. [illogical but I know what I mean]

Would he like it mixed with lots of mayo and sweet corn?

"Meal planning is a your friend" seems be be a popular comment on mumsnet. How can one meal plan without monitoring the inns and outs of the kitchen?

Personally, I bulk buy things that will not be used extravagantly, pasta, rice, potatoes, cous cous, toilet rolls, washing powder etc.

It's great not to have to worry about the cost of things but surely you have a duty to teach young people to be considerate and cost conscious.

Give the OP a break.

Ins

I get needing to be in control of the food - if you're responsible for the shopping and making sure there's food available when it's wanted/needed then you need to have some control over what's used when. However, IMO that applies to the fish/chicken/steak you have planned for dinner, or the last of the eggs, not to something (reasonably) affordable that will keep in the cupboard for ever. You just keep higher stock levels - assuming that extra £2 per week isn't going to break you, which it doesn't sound like it is.

And you're not shopping frugally if you're paying £1+ per can on tuna!!

Have you had this conversation with DH? How does he feel about feeding his son, even if he is paying maintenance to the boy's mother?

Has anyone even talked to the boy about why he's not staying in college for his FSM?