KH Glatt’s 20-day egrocery migration to Wave Grocery

Introduction

KH Glatt, a premium kosher market with locations in Brooklyn and Lakewood, faced a critical challenge: its previous ecommerce provider changed ownership and new the new model wasn’t favorable for KH Glatt anymore, so they decided to switch.

With the high-volume December period approaching, they needed a new, more flexible platform—fast.

Wave Grocery was selected to lead the migration, with a strict deadline of under 20 days and the requirement of zero downtime during peak trading.

Background and Objectives

Valued at over $900 billion, the U.S. grocery industry is one of the most competitive in the world, with digital channels representing a rapidly growing share of sales. Within this market, kosher and specialty grocery plays a unique role, serving highly specific dietary requirements and complex operational needs.

KH Glatt is a premium kosher market with two high-volume locations in Brooklyn, NY and Lakewood, NJ. Known for its wide range of kosher products and prepared foods, KH Glatt has built strong customer loyalty in local communities. But operating two distinct stores created increasing complexity, as each location required its own catalogs, pricing, and delivery rules.

KH Glatt sought to:

• Handle separate store logic for catalog, delivery, and pricing
• Offer pickup, scheduled delivery, and instant delivery
• Apply zip-code based delivery fees
• Support prepared food customizations with paid and free add-ons
• Require customers to select a store or address before browsing
• Integrate with Sola Payments and email marketing systems
• Enable thermal printer-compatible order printouts
• Launch both iOS and Android apps alongside a refreshed web storefront

Most importantly, all of this had to be delivered within 20 days, ahead of the critical December holiday season, with zero downtime.

Wave Grocery empowered KH Glatt to:

• Launch a multi-store configuration with independent rules and catalogs
• Implement smart delivery logic with 60-minute slots and dynamic fees
• Support prepared food add-ons for a smoother customer experience
• Sell fresh meat by weight online, just like in-store, with final pricing calculated at fulfillment
• Integrate with Sola Payments and back-of-house thermal printers
• Migrate all customers and product data from the old infrastructure to the new
• Go live, in record time, with a full omnichannel presence. Web, iOS, and Android

Through Wave Grocery’s grocery-specialized solution, KH Glatt achieved a seamless migration that preserved operations, improved customer satisfaction, and set the foundation for scalable growth.

Approach and Solution

Wave Grocery designed a compressed, milestone-driven implementation plan that mapped KH Glatt’s operational requirements to grocery-specific capabilities.

The grocery ecommerce sector is notoriously complex: fluctuating inventories, time-sensitive deliveries, item substitutions, and custom product configurations make it difficult for general-purpose platforms to cope. KH Glatt’s needs, like fresh meat sold by weight, kosher prepared foods with add-ons, multiple delivery logics, and strict checkout rules, made a purpose-built grocery solution essential.

For KH Glatt, the Wave Grocery platform offered:

Implementation and Results

To meet the 20-day deadline, Wave Grocery adopted a rapid but phased rollout plan in close collaboration with KH Glatt’s team. A clear timeline with milestones ensured each stage of the migration was completed without disruption.

The entire migration was completed in less than 20 days, without downtime, and without disruption to customer orders.

Data Migration

Implementation

Imported product catalogs, customer records, delivery zones, and custom pricing from legacy systems.

Result

With accurate product catalogs per store, customers now see the right availability and pricing every time they shop. Complaints about discrepancies dropped noticeably, and both Brooklyn and Lakewood locations gained confidence in digital ordering.

Logic Configuration

Implementation

Set up store-specific rules, including checkout enforcement, zone-based fees, and 60-minute delivery slots.

Result

Custom delivery logic with 60-minute slots and dynamic zip-code fees transformed KH Glatt’s delivery infrastructure. On-time order fulfillment rates climbed above 95%, while error-related callbacks were reduced, giving customers a more predictable service.

Web & Mobile app

Implementation

Rolled out a new website plus iOS and Android apps simultaneously, giving customers multiple shopping channels from day one.

Result

Launching a refreshed ecommerce website alongside branded iOS and Android apps gave customers multiple digital entry points from day one. Within the first 9 months, the mobile apps accounted for 8% of orders, with app users showing higher repeat purchase rates and larger basket sizes compared to web-only shoppers.

Printer Configuration

Implementation

Thermal printer setup connected directly to kitchen & store workflows, streamlining food preparation.

Result

Thermal print integration streamlined back-of-house operations. Kitchen & store staff received clear, structured tickets aligned to their workflows, cutting prep time and reducing miscommunication between front and back of house.

Team Onboarding

Implementation

Staff across both stores trained in catalog management, order processing, customer service, and fulfillment.

Result

Store managers now operate independently, managing catalogs, promotions, and delivery zones without external support. This autonomy accelerated decision-making and reduced reliance on developers, speeding time-to-market for new features and offers.

Customer Communication

Implementation

In-store materials and targeted email campaigns guided shoppers toward the new platform and mobile apps.

Result

Targeted email campaigns and in-store promotions guided shoppers to the new apps and website. Adoption was strong, and early digital customers drove a 14.3% increase in average basket size compared to the same period in the previous year.