Selecting items for an online concierge system user to include in an order to achieve one or more nutritional goals of the user

A computer program product comprising a non-transitory computer readable storage medium having instructions encoded thereon that, when executed by a processor, cause the processor to:

• obtain, at an online concierge system, an item catalog from one or more warehouses, an item catalog identifying specific items offered for purchase by a warehouse and including information describing specific items including nutritional information for specific items;
• receive a nutritional goal from a user, the nutritional goal specifying a set of nutritional quantities;
• generate, by the online concierge system, order templates for the user from items included in orders the online concierge system previously received from the user;
• receive, at the online concierge system, a request for an order from the user, the request identifying a warehouse for fulfilling the order;
• generate, by the online concierge system, candidate orders from the order templates generated for the user and specific items offered by the identified warehouse, each candidate order including a different combination of specific items offered by the identified warehouse;
• select, by the online concierge system, a set of candidate orders, each candidate order of the set including specific items offered by the identified warehouse that have nutritional information specifying nutritional quantities that, when combined, satisfy the received nutritional goal;
• for each candidate order of the set, determine, by the online concierge system, a likelihood of the user purchasing the candidate order of the set in its entirety;
• select, by the online concierge system, one or more candidate orders of the set based on the determined likelihoods;
• and
• transmit, by the online concierge system, an interface from the online concierge system to a client device of the user identifying the selected one or more candidate orders of the set.